4l80e Line Pressure Specs

3 swap over the last year. The PCS applies pressure to the isolator valve, which, in turn, forces the pressure regulator valve to increase line or boost pressure in response to vehicle load (figure 2). SUPER HEAVY DUTY 4L80E Rated up to 1200 HP ! Transmission and converter comes with a one year unlimited mile warranty extended warrantys are available! If you are using this transmission for drag racing and have over 650 HP you will need a upgraded converter you my need a anti balloon plate added or possibly billet hub or more disks. Wiring Diagram For 4L80E Transmission - The Wiring Diagram, size: 800 x 600 px, source: worldwidepartsoutlet. Its in a heavy 4x4 with a fresh SRTA 4L80E 2K stall and 3. Checking 4L60E Line Pressure What you should expect to see In D: 55-65psi Min. Non-electronic 700R4-based does not require transmission controller; Non-electronic 700R4-based uses Constant Pressure Valve Body™ to eliminate low line pressure conditions. For example, we can add a transmission cooler with its own electric fan or a large cooler that is installed in an area with good airflow. The 4L80E has a max torque rating of 440 lb. While still holding the 3/8" adjuster, tighten the 5/8" lock nut. $10,000 budget, and $10,000 on the line for the winner. The 4L60E was utilized in cars and light duty trucks. One electronic pressure control (EPC) solenoid for a 1993-2002 GM/Chevy 4L60E or 4L65E transmission. 6L80/90 technical information. Power it up. 23 rear 1997 4l80e rebuilt with hd2 kit Precision industries 3800 triple disk Everything seems to be good except when im pulling away from 1st gear. The pressure does not change when I rev the engine. A Complete System Correction and Recalibration Kit improve pressure control and shift quality. To address the issue, every SST remanufactured 6L90 transmission gets a redesigned stator support shaft with more robust seals, all the pump surfaces get machined to allow consistent fluid pressure, and the weak OE bushings are replaced with stronger custom-spec bushings. Idle speed is ~700rpm. If you have any questions about the installation or line pressure readings, please contact our technical support department. Center Support and Race Assembly for 4L80E / 4L85E Transmissions. 5-2010 Duramax Left (Drivers). As bore wear increases, oil pressure is reduced to the shift solenoids, which causes solenoid and ratio codes. As the title says, I have a fixed line pressure 4l80e that makes good pressure when cold, but slowly drops as it heats up. TCC tuning is a bit of an art. The pressure should rise to well over 60psi when I rev the engine in gear, from what I understand. One of the keys is to keep the TH400 line pressure under 250 psi if possible. Older transmissions had mechanical. We have the best part and the fastest shipping online! Contact our excellent customer service team if you have any questions!. The 4L80E is an electronic controlled automatic transmission with overdrive which was based on the dependable General Motors Turbo Hydramatic 400 series transmission. Flywheel Distance. If you recognize any of the above warning signs or symptoms, contact a professional ASE certified mechanic in your area to have them replace the transmission oil pressure switch as soon as possible if this indeed is what is causing your. NOTES: These harnesses are designed for retrofitting 2002 Vortec engines (4. 0) and 4L60E or 4L80E transmissions into older muscle cars and street rods or newer non-emissions controlled vehicles. DESCRiPTiON QTY. 495 lb-ft ( 542 Nm ). To perform a pressure test on your 2004R is not hard and can supply lots of info if you are having a problem. net is the home of the Transmission Rebuilders Network offering the leading transmission rebuilder forum in the transmission industry. Home > Technical Manuals > Technical Manual 4L80E. 0 amps is default and it causes maximum pressure, 1 amp is minimum pressure. I have a strange problem with my rebuilt 4l60e 1995, I have a constant line pressure of about 180psi in all gears including park and neutral. 100 PSI of converter charge pressure generates 89 pounds of rearward thrust on the overdrive planetary gearset, forward clutch housing, and mainshaft. 4L80E Automatic Transmission Forward Clutch Hub. Hypertech New Product Catalog. TH-700R4 Basic Information [by: M&M CUSTOM] The Turbo-Hydramatic (TH) 700R4 automatic overdrive transmission was introduced to Chevrolet vehicles in 1981 for the 1982 model year vehicles. I have drive for now with no reverse. To address the issue, every SST remanufactured 6L90 transmission gets a redesigned stator support shaft with more robust seals, all the pump surfaces get machined to allow consistent fluid pressure, and the weak OE bushings are replaced with stronger custom-spec bushings. Part of the issue is that the cooler lines on a 4L80E are not angled but come straight out of the case. The transgo kit does 2 main thingsincreases line pressure and "dual feeds" the direct clutch. Transmission fluid cooler line connections are found on the right-hand side of the THM400. The 4L80E is an electronic controlled automatic transmission with overdrive which was based on the dependable General Motors Turbo Hydramatic 400 series transmission. light duty trucks for 1991. This all translates into a huge increase in the transmissions torque capacity, reducing clutch and band slippage and firming up shift quality at all throttle angles. 75 overdrive. It fits the 4L80E with Raybestos clutches and a higher capacity intermediate band for solid hook-up. The 4L80E was used for heavier duty trucks. Dexron VI Transmission Fluid Capacity. Non flex fuel engines, fuel pressure spec is 55 to 62 psi with vacuum line disconnected, fuel pump running. This unit is basically a THM 700-R4 with electronic controls added to the valve body. The 4L80E (and its successor 4L85E) was the first Hydramatic to incorporate electronic controls — almost all of the THM400/3L80/3L80HD's components are interchangeable. Transmission Line Pressure Specifications. The RAMJET 502 engine is a fully assembled engine. 4L, with 4L80E trans 2W D. unsure if its a line pressure issue? Basically took a stock 2002 van 4l80e tune, upped the line pressure around 5-10%, upped the. 4L60E vs 700R4. The largest selection of Chevelle, Monte Carlo, El Camino; GTO, LeMans, Tempest, Grand Prix, Bonneville, Catalina; Cutlass, 442; Skylark, GS, Riviera; Cadillac; Regal, Grand National, T-Type; classic parts in the world. Brief history: The truck is a '92 silverado 3500 with a 454 and 4L80E, I bought the truck with no trans, the old one fried. One of these issues is hard face gear pitting. Read reviews, browse our car inventory. 3 swap over the last year. The oil pressure switch of the transmission is vital for the smooth and efficient operation of the vehicle. Off a 1996 Chevrolet Suburban C2500 7. I am glad I have did some major on-line researching and DID NOT fall for the full, complete rebuild on my transmission. Free next day delivery or same day pickup. TCI Auto HELP™ 1-888-776-9824. and it can handle a total gross vehicle weight of 8,600 lb, which makes it a great transmission for LS swaps with no modification needed whatsoever. The transmission on your car is something that must be maintained for your car to run properly. Rotor, slide and vanes LINE PRESSURE BOOSTER KIT 700R4-LB1 Instruction Supplement 4L80E-LB1 4L80-E, 4L85-E 4T65E-LB1 4T65-E 350-LB1 350 4R70W-LB1 AODE, 4R70W, 4R75W. Typical 4L80E converter charge pressure during high load is usually around 100 PSI, with a maximum line pressure of 180 PSI. Label each pair of wires on the harness so as to not confuse them. 00 per rebuilt trans job. Want to make sure this part will fit on a specific Year/Make/Model? Email Phoenix Transmission Parts at: [email protected] The 4L80-E was heavily based on the Turbo-Hydramatic 400 first produced in October 1963, adding electronic controls and an overdriven fourth gear. 4L60E Technical Information. Fits Chrysler 300, Dodge Charger, Jeep Liberty and More. pressure, turn clockwise. Pressure gauge is hooked to the line pressure port of the trans. Right here are a few of the leading illustrations we receive from numerous resources, we really hope these photos will certainly serve to you, and also with any luck extremely relevant to exactly what you desire regarding the 2000 Chevy 4L80E Transmission Shift Solenoid Location is. Whether it is Offroad racing, Kings of the Hammer, drag racing or just a custom street rod. 3 quart fill. The answer is the PCM is in complete control of every aspect of when and how the 4L60E shifts, Line Pressure and Lockup. Bottom line. I promise you that the next transmission I have to replace or any other person I hear of needing a transmission I will be heavily promoting Monster Transmission and tell them that I personally use Monster Transmission. I just know from my experience the 80e does NOT require more power, it costs 1/2 as much to build and as stated the computer is really the GOOD thing about it. Like earlier automatics, the 6L80 features one line pressure tap available for testing and diagnostic purposes. Here's an exploded view of al of the components that make up a Hughes Turbo 400 build. 4L80-Es were optioned only in Chevrolet/GMC pickups,2500 Suburbans, vans, and commercial vehicles. Setting the idle on Hemi number 56. Kent-Moore Tools J-45096-22. We have over 50 4L80E cores, and all hard parts, in stock. the pressure or counterclockwise to decrease the pressure. $10,000 budget, and $10,000 on the line for the winner. Line flows past the clearance of #14 land into the #14 circuit. 30k miles last I heard and still going strong. Here are some specs 2005 5. 10 Days to build. Hypertech New Product Catalog. Installation and Operation Manual for 4L60E, 4L65E, 4L70E, 4L80E, and 4L85E transmissions. Pressure gauge is hooked to the line pressure port of the trans. 60 qt) - 6CYA Transmission Type: 6. Insert the other end of the rubber hose into the fill tube of the transmission. Whether you need 4L80E wiring diagram information, 4L80E transmission rebuilders tips, 4L80E technical information, 4L80E diagnostics, 4L80E troubleshooting help, or just answers to your 4L80E transmission rebuilders question, the Transmission Rebuilders Network is the place to go!. I noticed a wierd twitch in the pressures like just out of the blue the gauge would jump up about 100 psi or so higher for a split second. These systems include vacuum modulators, TV cables, and electronic pressure control solenoids (EPC or PCS). He brought it to us for a drive-train upgrade. Mfg Retail: $54. Both the 4L80E-based and 700R4-based versions of the 4x Four-Speed feature an SFI-spec adapter bellhousing for easy installation of the transmission behind a Small or Big Block Ford, Ford Mod, Small or Big. Electronically altering line pressure using a B&M Module, Various hand held programmers ect, ect on a 4L60E is no good And also that technique of adjusting the Force Motor I believe it is called inside of the transmission a 1/4 turn is not good either. Some performance vendors sell a brace that helps prevent case lug breakage. Line Pressures FOR 4L80E: Gear Range Line Pressure Drive, Park or Neutral 70-171 Reverse 67-324 These are idle pressures to wide open throttle pressures. TransGo kits contain a heavy snap ring to help this, I use a center support snap ring from a TH2004R. IMPORTANT: This modification will allow 1 st gear with engine braking. 6L80/90 technical information. GM > Transmission > General Pressure. This was our first 1000HP transmission offered at PerformaBuilt. Cause: TCC regulator apply valve wears the aluminum bore, causing loss of converter apply pressure oil. You will also need a pressure gauge that goes to 300 psi. Line Press. 0L 4X4 1999-2004 Chevrolet Silverado…. I picked it up today and it isn't quite as represented, it is a 1995 and when the junkyark butchers removed it from its parent vehicle, they basicly broke every one of the electronic connections. the pressure or counterclockwise to decrease the pressure. This transmission is similar to the TH400 except that it is electronically controlled and has an overdrive. 3 with a GT2-3 cam and 2000 LS1B w/ COS 5. The lower connection is the cooler feed, and the upper connection is the return. The torque converter is a fluid turbine drive and - like those on its predecessor transmissions, the TH350C, 700R4, 4L60, and 4L80E - features a lock-up pressure plate for direct mechanically coupled driving from the engine crank. Buy TCI TCI225105 Kevlar Band for Reverse GM 4L80E Transmision at Walmart. 7 liter gas engine or the 6. Find great 4L80E and tech information from Global Transmission Parts. meets OEM specs. 1-What controls the shifts in a 4L60E 4L80E and can I replace the PCM with a vacuum modulator. So many say to take the temp of the oil in the pan, sorta spliting the differance. Idle speed is ~700rpm. The 4L80E was used for heavier duty trucks. 0L High Pressure Oil/Injection Pump, 2003-2004. 4L60E vs 700R4. Chevy's Turbo Hydramatic 400 (TH400) transmission is one of those legendary pieces of equipment that helped to define the muscle-car generation, and it continues to be one of the most common and highly regarded transmissions in today's enthusiast market. Tired of smoking the clutches in your converter? We’ve got TOUGH 9. We put a steel pressure regulator valve to eliminate that common problem. 4L80E behind a 2001 5. Kent-Moore Tools J-45096-22. This is a 331 Hemi. 4L80E 4L85E Transmission Line to Lube Pressure Regulator Valve Sonnax 34200-14K. 3 swap over the last year. Tips for building a 4l80e without the HD2 Kit (By Grady): If you're going to tear the trans down to a bare case and actually build the thingdon't spend your money on the transgo HD2 Kit. Please be sure your Pan has 17 Bolt Holes. Mod Main Pressure Enable Low: If enabled, Trans Temp must fall below this to disable modulated main pressure. Our 4L80e and 4L85E transmissions are one of the strongest in the world. Non flex fuel engines, fuel pressure spec is 55 to 62 psi with vacuum line disconnected, fuel pump running. Fast, Free Ground Shipping on orders over $199. One of my Trans cooler lines on my 01' GMC 2500 (with 4L80E) tow rig rusted through at a clip and produced a pin hole. increase the pressure or counterclockwise to decrease the pressure. COOLING PRODUCTS COOLING ACCESSORIES. Everybody chooses a different color for their project. No amperage means max line pressure. Electronics, and Wire Harness info. This leaves the output shaft unsupported, ruins the governor gear and can cause case damage. We inspected all hard parts and replace all parts not in as new specs. As to length, this transmission is 26-1/4" long. choose from three powerful engine options gm p400 6. 5L Diesel & 4L80-E automatic transmission, and engine oil cooler line adapters. Description. The most common problem on the 4L80E is loosing reverse and 3rd gear due to the aluminum pressure regulator valve binding up and sticking at wide open pressure. 100 PSI of converter charge pressure generates 89 pounds of rearward thrust on the overdrive planetary gearset, forward clutch housing, and mainshaft. reverse is the highest pressure reading and that shoud be around 300 310 max. I just rebuilt this 4l80e the other day and got it installed. 94] Universal Throttle Bracket [+$49. We put a steel pressure regulator valve to eliminate that common problem. This is a very good transmission, however often under some heavy duty, performance and towing applications the transmission can slip or require increased line pressure and/or. The pressure regulator is part of the fuel filter - 2 lines on tank side - In & return, 1 line on fuel rail side. Express, Savana, 3500 2002 V8 8. 4L80E Specifications. The RAMJET 502 engine is a fully assembled engine. The transmission typically accepts a 6. I have absolutely no idea what the line pressure will be. GM 4L80E technical information The 4L80E transmission is a four speed automatic with torque converter clutch. HYDRA-MATIC 4L60-E ELECTRONIC CONTROLS ABC123 Entire Article 2000 Chevrolet Camaro PCM/VCM receives signals from various transmission sensors. 00 per rebuilt trans job. To provide a better understanding of fluid flow in the Hydra-matic 4LE. Line Pressures FOR 4L60E: Gear Range Line Pressure Drive, Park or Neutral 50-189 Reverse 67-324 I Wire from wiring harness New solenoid wire Strip back insulation I" [DD=~= approx. I promise you that the next transmission I have to replace or any other person I hear of needing a transmission I will be heavily promoting Monster Transmission and tell them that I personally use Monster Transmission. Fully computerized control of the shift points, torque converter clutch engagement and line pressure control ensure that the 4L80E will be with us for quite some time to come, easily interfacing with the newest powertrain control and diagnostic computer systems. Here are some specs 2005 5. Transmission 4L80 Rebuild. Sensors include engine speed and throttle position, transmission speed, hydraulic pressure and transmission fluid temperature. connector row pin pin name function wire color termination notes; trans 1: a: 1 +12v power: 12vdc solenoids: red 18ga: trans plug pin e trans 1: a: 2 +12v power: 12vdc press sol. Aftermarket performance auto car parts company & vehicle gauge manufacturer. Its in a heavy 4x4 with a fresh SRTA 4L80E 2K stall and 3. The 4L60E was utilized in cars and light duty trucks. Transmission electrical diagnosis troubleshooting help on all your transmission problems or questions. Looking for better reliability and power at the same time from his current 283ci and Powerglide, we sourced him a LQ4 6. The gearing to move such a heavy load is a 2. This is a 331 Hemi. Express, Savana, 3500 2002 V8 8. The tank comes with all the block off fittings and line returns for various years. Thrust Bearings , and locations. If your 4L80E is slipping, overheating, shifting irregularly or making noise, you should have it repaired before or, in conjunction with the installation of your B&M 4L80E Shift Improver Kit. Tradebit: bandwidth / traffic to anybody, who wants to sell downloads and files online (with PayPal, Google Checkout or clickbank). light duty trucks for 1991. An actuator feed limit valve assembly for installation in a transmission valve body having an actuator feed limit circuit for conducting hydraulic fluid to the hydraulically actuated components of a transmission, said actuator feed limit valve assembly comprising: a cylindrical valve sleeve having a plurality of inlet and a plurality of exhaust ports arranged in a radial. 1025 W 1700 N Logan, UT 84321 Phone: (877) 373-5940 Fax: (435) 753-7300 [email protected] 48 second, 1. Find great 4L80E and tech information from Global Transmission Parts. The biggest fitment issue we see is in the cooler line area. The transmission also received an improved Park/Neutral safety switch and improved transmission line pressure solenoid. The 4L60E was utilized in cars and light duty trucks. It is also known as a "force motor" solenoid when used in 4L30E from 1989-97 and 4L80E from 1991-2003. vehicle weights. Part of the issue is that the cooler lines on a 4L80E are not angled but come straight out of the case. 3 Powerstroke High Pressure Oil/Injection Pump HPOP 99. tpd pro-line 4L80E 4L85E TRANSMISSION LOW (REAR) ROLLER CLUTCH FITS LATE '95+ Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best). 2014 · two problems with the 4l80e one could be line pressure, the other the 80e has a fail safe that wont let the trans shift to reverse if it senses a speed of greater than 8mph. 4L80E 6 Piece Solenoid Set. NOTE: Be sure the five (5) line up the plate and gasket. 1L 4 Spd RWD 4X4. This kit restores hydraulic integrity, as a result line pressure boost will once again meet the OE specifications. No fuel in the fuel pressure regulator vacuum line. meets OEM specs. This process. HYDRA-MATIC 4L60-E ELECTRONIC CONTROLS ABC123 Entire Article 2000 Chevrolet Camaro PCM/VCM receives signals from various transmission sensors. The answer is the PCM is in complete control of every aspect of when and how the 4L60E shifts, Line Pressure and Lockup. Checking 4L60E Line Pressure What you should expect to see In D: 55-65psi Min. The GM 4L80E 4-speed overdrive transmission is the ultimate overdrive platform to suit virtually combination that requires the strongest overdrive transmission possible. For Sale Online. Pressure modulates. The pressures in other gears seem ok, between 90 and 180 psi between 700 and 2000 rpm, truck not moving. No codes from the ecu, tried another ecu as well but same pressure. 4L80E Performance Specs. Favorite Answer. 4 vs 5 Pinion Planetary. 4L80E Transmission Bionic 80 Performance 4L80E Transmission Level 2 and 3 $ 3495. 00] Speedometer - Mechanical [+$49. Yes the pressure drop thru a ½" line is a nominal 5 feet versus 35 feet for the 3/8" id fuel line. The 4L80-E (and similar 4L85-E) was a series of heavy-duty automatic transmissions from General Motors designed for longitudinal engine configurations. This is a computer controlled transmission first introduced in G. Performance Automatic gives the 4L80E greater pump capacity for higher volume and pressure. #700r4 servo pin removal pictures. 5L turbo all stock 220,000 miles. If you have any questions about the installation or line pressure. The one thing I do remember is that there is a plug between the case and tailshaft housing. Park, Neutral, Drive. (1) “A” 1-2 Shift Solenoid. Installation and Operation Manual for 4L60E, 4L65E, 4L70E, 4L80E, and 4L85E transmissions. Order 271100P1 TCI Chevrolet 4L80E Heavy-Duty/Towing Transmission Package at CNC-Motorsports. Typical 4L80E converter charge pressure during high load is usually around 100 PSI, with a maximum line pressure of 180 PSI. In 2006, GM superceded Dexron III as the recommended fill with Dexron VI, which is backwards compatible with the earlier versions. There is Book Learnin' and there is Work Bench Learnin'. One of the biggest differences is the lockup torque converter, and an additional forward gear which served as an overdrive to improve fuel economy. 00 Select options; 700R4 Transmission-Chevy 700R4 Level 2 700 Raptor Junior $ 2249. Hypertech New Product Catalog. 4L80E/4L85E transmission TCC regulator valve kit. "The main difference is that the 6L80E has much more versatile gear ratios. Our drop in valves require no reaming or tooling. The TransGo drop-in USA-made hardened steel boost valve and bushing assembly provides you with a durable direct replacement for the soft aluminum OEM assembly that is prone to wear. The staff has been amazing to work with and takes care of their customers better than any other company I have ever dealt with. GMTransmission Pan Bolt Set Compatible with 4L80E, 4L85E, 6L80E, 6L90E, 8L80E, 8L90E, 10L80E, 10L90E,4L60, 4L60E, 2004R, 700R4, 200R4 transmissions All ICT Billet metric flange bolts are custom made ICT Billet 551683-18 - 18pc Transmission Pan Bolt Set 4L80E 4L85E 6L80E 6L90E 8L80E 8L90E 10L80E 10L90E. This 604 Shift Kit fits 1989 and newer Chrysler, Plymouth, Dodge, Eagle, Ram, Jeep and Mitsubishi vehicles equipped with the A604/41TE, A606/42LE and. From left to right, top to bottom are: valve body, output shaft, pump stator, planetary gear sets, rear band, pump body and gears, direct drum, direct clutch pack, forward drum and input shaft, forward clutch hub, direct clutch hub, direct clutch pack, intermediate pressure plate, intermediate clutch pack. One of these issues is hard face gear pitting. He brought it to us for a drive-train upgrade. We can build it. 700R4 Input Shaft Spline. Lay the valve body gasket marked "C" on the separator plate. * The Pressure Control solenoid controls main line pressure, pulsed at 0-60% duty cycles at 293 Hertz. We’ve got used engines and transmissions for nearly any vehicle you can think of so you don’t have to worry about calling around all day trying to find what you need. The 4L80E has a max torque rating of 440 lb. These readings can be obtained by attaching a 300 psi fluid pressue gauge to the appropriate pressure port on the transmission, and running the engine at 2000 rpm. The 4L80E transmission is a 4-speed automatic gearbox that uses similar architecture as the venerable TH400. Information about GM's 6-speed 6L80 MYC Hydra-Matic transmission, including details, specifications, vehicle applications, and more. Diesel Conversions® works hard to be leaders in the Cummins diesel conversion market, and we want to be the best. Please be sure your Pan has 17 Bolt Holes. Holds 1st, 2nd, and 3rd gear at any RPM. I have a friend that did the swap using TC and he burned up 2nd gear. NOTES: These harnesses are designed for retrofitting 2002 Vortec engines (4. 4L80E Specifications. 4L80E Performance Specs. 94] Universal Locking Dipstick [+$24. to 300-325psi Max. If this modification is not performed, high line pressure will result. 48 first gear, 1. 4l80elb1 4l80-e, 4l85-e line pressure booster kit Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together to provide progressive pressure increases as driving conditions become more demanding. Line Pressure Plug : 6-10 lb ft : Manual Shaft to Inside Detent Lever Nut : 20-25 lb ft : Negative Battery Cable Bolt : 11 lb ft : Oil Level Indicator Bolt : 35 lb ft : Oil Pan to Transmission Case Bolt : 97 lb in : Oil Passage Cover to Case Bolt : 6-10 lb ft : Park Brake Bracket to Case Bolt : 20-25 lb ft : Park/Neutral Position Switch Screw. I would only up line pressure if you think it's slipping, OR if you installed a larger throttle body which is causing more engine torque to be applied for a given TPS. There is no cleaning pulse (dither) every 10 seconds on this transmission (unlike the 4L80E). TCI® 276000 - 4L80E Transmission pressure switch manifold assembly and remove the switch assembly. If a harsh upshift is evident in a specific gear, check the accumulator which is associated with the holding device for that specific gear. 3L, Ls6 cam, gt45 turbo 3. Part of the issue is that the cooler lines on a 4L80E are not angled but come straight out of the case. Pressure modulates. 4L and 4L80E, 4. Non-electronic 700R4-based does not require transmission controller; Non-electronic 700R4-based uses Constant Pressure Valve Body™ to eliminate low line pressure conditions. 1L 4X4 2001-2003 Chevrolet Silverado 1500HD 6. If the early shallow filter is installed it will fall off causing low pressures and slippage. In R: 64-75psi Min. This process. It pulls his 5500lb rig & single car trailer every other weekend during the summer ranging some 2500ft altitude changes. Part Number: TCI-831010. 4L80E Rear Planet 4 Pinion Late This is an Late style, four pinion planet with updated bat wing style washers This Planet Is a Stock Replacment For 1991 - 1998 4L80E Automatic Transmission Applications. To perform the line pressure tests an analog dial type gauge 0-350 or 400psi is required. Going to check line pressure, before I remove it to replace all the solenoids. In R: 64-75psi Min. Most transmission cases have test ports to retrieve hydraulic pressure readings for the line, clutch, and servo circuits. The 4L80E has proven reliable like it’s predecessor. It will shift from 1-3 because second is forced and 1 and 3rd are done by solenoids. The 4L80E normally requires a stand alone controller for automatic shifting and pressure controls. Trouble codes , and descriptions. This should spike with slight pressure applied on the cable or if the throttle is cracked at all. Maximum current should not exceed 1. 30k miles last I heard and still going strong. 6L80E Specs The 6L80 is a robust transmission and can handle a ton of power. If you have any questions about the installation or line pressure readings, please contact our technical support department. This is a computer controlled transmission first introduced in G. Free shipping US Orders +$99!. • CPP 4L80E/4L85E (4L8X) Transmissions • 4L80E/4L85E (4L8X) Family Transmissions from Model Year 1991 to 2008 Note: Pre-1993 4L80E transmissions will need to have an updated internal harness/connector installed to be compatible with the TCU harness. 95] Detent Cable [+$27. This includes all text illustrations,. Another common problem is damaged accumulator bores. Elsewhere in this story we've listed the ratios of both the TH350 and the 700R4/4L60E. Many of the other specifications can be gathered by deciphering the name. and there was no pressure. com Heavy Duty 4L80E Rebuild Kit HEG frictions & STD steels. 4L80E-LB1-IN 09-02-15 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www. Power it up. Installation and Operation Manual for 4L60E, 4L65E, 4L70E, 4L80E, and 4L85E transmissions. 700R4 TV Cable. Pressure gauge is hooked to the line pressure port of the trans. 080" Frictions & 6. 4L80E Transmission Rebuild Kit Heavy Duty Stage 5 1997-UP Ebay. From left to right, top to bottom are: valve body, output shaft, pump stator, planetary gear sets, rear band, pump body and gears, direct drum, direct clutch pack, forward drum and input shaft, forward clutch hub, direct clutch hub, direct clutch pack, intermediate pressure plate, intermediate clutch pack. In R: 64-75psi Min. 75Maro Veteran Member. Line Pressures FOR 4L80E: Gear Range Line Pressure Drive, Park or Neutral 70-171 Reverse 67-324 These are idle pressures to wide open throttle pressures. You should test the transmission pressure from time to time to ensure that no imminent repairs need to be made on your vehicle. An actuator feed limit valve assembly for installation in a transmission valve body having an actuator feed limit circuit for conducting hydraulic fluid to the hydraulically actuated components of a transmission, said actuator feed limit valve assembly comprising: a cylindrical valve sleeve having a plurality of inlet and a plurality of exhaust ports arranged in a radial. 1997 & Later -6AN Fitting Kit. One of the biggest differences is the lockup torque converter, and an additional forward gear which served as an overdrive to improve fuel economy. Engine Coolant Temperature Delco #213-310 VSS (4L80E) GM #24203876 Oxygen Sensor (Drv. The Converter Pressure Limit Assembly may be one assembly that can cause almost all of the torque converter malfunction symptoms in your customer's 5R110W unit (Figure 12). The EPC solenoid is tested separately. to 300-325psi Max. Note: 1998 and later C & K trucks and G vans use a deep pan and filter assembly. 6 inches long – and features a powder-coated cover with quick release pins. Line Pressures FOR 4L80E: Gear Range Line Pressure Drive, Park or Neutral 70-171 Reverse 67-324 These are idle pressures to wide open throttle pressures. ie varying amperage not the volts. OPGI carries thousands of classic GM restoration parts and accessories offered in 14 FREE catalogs. 4L60E vs 700R4. 4L80E, 4L80-E, TRANSMISSION MASTER REBUILD KIT, 1996 ONLY, (34008EA-96) (11-12) This is a NEW Super Master Rebuild Kit for the 1996 Only, GM 4L80E Transmissions. Booster 4L80E Part # 4L80E-LB1 Reference # Extra information. Dexron VI Transmission Fluid Capacity. The direct clutch is used in 3rd gear and also for reverse. Side) Delco #AFS 93 Manifold Absolute Throttle Position Sensor Delco #213-912 Pressure Sensor Delco #213-351 Ignition Module Delco #D579 5. PATTERN ,LOW OR HIGH GEAR BRAKE APPLY) $525. This includes all text illustrations,. With foot on brake, line pressure should increase smoothlyas throttle is. manual 1st There are two different things going on when in tow/haul mode and in manual 1st in a 4l80 When in tow/haul mode, the PCM ups the line pressure in the transmission by changing the amerage to the pressure control solenoid resulting in a firmer/stiffer shift, to reduce silpage, and also extends the shift points so your RPM's are higher when the shifts happen. The transmission on your car is something that must be maintained for your car to run properly. If your 4L80E is slipping, overheating, shifting irregularly or making noise, you should have it repaired before or, in conjunction with the installation of your B&M 4L80E Shift Improver Kit. Attach one end of a rubber hose to the disconnected line coming from the radiator. 1991-1995 models received part number 8661657 and are known as the early pistons. Backshifts 3rd, 2nd, and 1st at any RPM. If you have any questions about the installation or line pressure readings, please contact our technical support department. 4th will only work if the 2-3 solenoid gets enough pressure. Re: Whats the average 4L80E trans temp? 07-28-04 04:17 PM - Post# 487544 In response to Jay727 Seems to me if you put the sender in the line ports your ether getting the hotest oil coming out of the converter. Center punch hole as a guide for the drill bit. Forward pressure is controlled by EPC oil reacting directly on the spring end of the PR valve. 3L in a Silverado. TCI® 276000 - 4L80E Transmission pressure switch manifold assembly and remove the switch assembly. This is an ideal combination: smooth engagements and lower load on the pump at idle, but a greater increase in pressure as the transmission is worked harder. NOTES: These harnesses are designed for retrofitting 2002 Vortec engines (4. I located what I believe is the port "on the driver's side about half way up and half way back" The problem is, that it looks like it is already in use. The PCS applies pressure to the isolator valve, which, in turn, forces the pressure regulator valve to increase line or boost pressure in response to vehicle load (figure 2). meets OEM specs. 5-2010 Duramax Left (Drivers). Our Part Number Is 34890. 2l gasoline epa 2010 emissions cummins 5. Free shipping. 46390A 4L80E Transmission solenoid kit 91-03 4L80E transmission solenoid kit. @ 2,800RPM. 4L80E/4L85E transmission TCC regulator valve kit. 90 Degree Fittings; A/C Fittings; Adapter Fittings. In R: 64-75psi Min. It is not 100% accurate for sure, it seems GM offered a lot of special order features over the years. Most transmission cases have test ports to retrieve hydraulic pressure readings for the line, clutch, and servo circuits. The 4L80E is a good transmission to use on the Cadillac 472 and 500, due to the strength of the 4L80E. This 4L80E Forward Clutch Hub Is Made From An AISI 1045 Steel Forging And Consists Of It has quiet, vibration-free running which allows the operator to ascertain the noise level within the transmission and torque converter assembly. YEAR PART NO. Page 2- 4L80e Build for 550hp Things that use Spark Plugs Rick's is an 08 out of a van so it should be about as stout as a stock 4L80e gets. ailing transmission. What is the line pressure of the 4L80E at idle. Line Pressures FOR 4L60E: Gear Range Line Pressure Drive, Park or Neutral 50-189 Reverse 67-324 I Wire from wiring harness New solenoid wire Strip back insulation I" [DD=~= approx. Booster 4L80E Part # 4L80E-LB1 Reference # Extra information. Flywheel Distance. It seems like the EPC solenoid is working (because when I command different amp levels, the line pressure changes) but something isn't telling it to increase the line pressure. In vehicles changing to all disc brakes, it becomes very important to get rid of the 10 lbs valve if the vehicle previously had drum brakes. RUSSELL PERFORMANCE PLUMBING - 101 Plumbing a vehicle can be a little overwhelming at times. 4L and 4L80E, 4. 00] Speedometer - Mechanical [+$49. Created by ALLDATA, ALLDATAdiy. 75Maro Veteran Member. Send us your specs by filling out our online recommendation form and we will get back to you as soon as possible. 265 75 16 tires about a 31 inch tire Just got the truck about two weeks ago, when first started up from cold as long as i don't get on the gas too much i can go forever without hard shifts as long as i dont stay in OD too long. 4L80E safe pressures? In the upshift table "Base Shift Pressure vs. Aftermarket performance auto car parts company & vehicle gauge manufacturer. 52:1, the downside with the deeper First is the major rpm drop in the 1-2 and 2-3 gear changes that the 700R4/4L60 force upon you. Our site has more Crank and Cam Signal Kits, Connectors, Terminals, and Professional Series ECU Extensions than ever before! We offer a range of wiring harnesses perfect for your injection system, fuel pump, and fuel injectors - all made with the proper TXL wire to complete your project. Setting the idle on Hemi number 56. THE 4L85E TRANSMISSION. Intellitronix is an industry-leading manufacturer of best-selling designed automotive electronics, digital instrumentation, high performance motorsport, marine and racing products, ignition systems, DRL and off-road lighting, and RV energy management systems. Torque Specs. Product Series Position Quadrant. Like earlier automatics, the 6L80 features one line pressure tap available for testing and diagnostic purposes. Key on again pressure goes to 37 psi. There is only one port to check though. The Following New Parts are the Minimum Parts we put in our 4L80E if the brands specified are unavailable then we may substitute other brands of similar quality. Jump to Latest Fuel injector return line bolts: 12lb-ft -1993 Chevy 2500 4x4 Reg cab Long bed. 0 Transmission Controller for Ford AODE/4R70W features: Fully programmable with T-Com™ 2. tow/haul vs. I am glad I have did some major on-line researching and DID NOT fall for the full, complete rebuild on my transmission. No Line Rise Now that we’ve looked at how the 6L80/90E transmission operates, it’s time to tackle our problem vehicle that had no line rise after a rebuild. :machine: Instead of unplugging like most intelligent. ALLDATA is the industry's leading source of online factory Diagnostic and Repair Information used by 200,000+ automotive technicians everyday. On a 2 wheel drive there is a pin hole in it to allow trans fluid to lube the tail shaft. Improving GM 4L85E Transmissions for Off-Roading. This particular piece is from a 1996 4L80E from behind a 6. coa-12025 - pro tree 5 instant reaction w/rev lock out safety feature, adjustable pressure regulator (std. 06 for the 700/4l60e), and if you want to run it in an older car/truck (4l80e) you have to go manual valvebody or with. Clamps; Fittings. 95] Torque Converter. In the sequence shown in Figure 4. 5L turbo all stock 220,000 miles. airhunt2 Posts: 47 Joined: Sat Mar 17, 2007 7:21 pm Car: 2000 Infiniti I30T 2009 Infiniti G37 2011 Infiniti M37X 2007 Mazdaspeed3 Location: Tulsa, OK. Six forward gears (2. Can use braided stainless/rubber low pressure hose? Any help in educating me will be appreciated. What's New. Unlike the TH400, lube pressure doesn’t raise rearward thrust. Oil Passage Identification. P, R, N, D, S (some models) Case Material. Line Press. After looking at his bin file, it looks like he bumped up the line pressure significantly. 2006 and newer General Motors and BMW vehicles equipped with 6L45, 6L50, 6L80 and 6L90 automatic transmissions often wear out the line pressure boost valve and bushing. ALLDATA is the industry's leading source of online factory Diagnostic and Repair Information used by 200,000+ automotive technicians everyday. Line Pressures FOR 4L80E: Gear Range Line Pressure Drive, Park or Neutral 70-171 Reverse 67-324 These are idle pressures to wide open throttle pressures. Kits available with additional 4L60E/4L80E transmission control capabilities Self-tunes instantly to deliver the perfect air/fuel mixture in real time for optimized fuel economy and power Virtually maintenance free - keeps your vehicle reliable and ready to drive. txt) or read book online for free. MITSUBISHI F5A5A (F5A51) & HYUNDIA/KIA A5GF1, A5HF1 (F5A51) This is a five speed, Front Wheel Drive transaxle, with fully electronic controls for the upshifts and downshifts, with 5th gear being overdrive. Its in a heavy 4x4 with a fresh SRTA 4L80E 2K stall and 3. This Is A New OEM Factory Dealer Brand Complete Solenoid Kit For Gm 4L80E Transmissions. Setting the idle on Hemi number 56. PASSAGE ID / AIR CHECK No part of any ATSG publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without written permission of Automatic Transmission Service Group. Part of the issue is that the cooler lines on a 4L80E are not angled but come straight out of the case. 2010 atsg bulletin index 10-01 nissan re4r01a low/reverse anti rattle clip location 10-05 chrysler/dodge 41tes/42rle vlp variable line pressure solenoid and sensor. Send us your specs by filling out our online recommendation form and we will get back to you as soon as possible. I want to install a transmission temperature sending unit for an Autometer gauge in my transmission line pressure test port. Our transmissions have withstood. This includes all text illustrations,. 4L60E Technical Information. 4L80E Line Pressure Booster Kit. It shifts very nicely when in SD mode but as soon as I re-enable the MAF it loses the firmness - I assume due to the line pressure following the tables? I'm hesitant to add too much shift pressure as I don't know what's safe/not, this is the first -80E I've messed with but it'd sure be nice if this thing would shift somewhat firm. Pressure gauge is hooked to the line pressure port of the trans. Shop our parts catalog and find what you need to get your car back on the road!. I promise you that the next transmission I have to replace or any other person I hear of needing a transmission I will be heavily promoting Monster Transmission and tell them that I personally use Monster Transmission. Transmissions plug pin identification 1995 and up. 4l80e fluid flow It seems the pressure test port is the accual fluid temp that is being used. Fast, Free Ground Shipping on orders over $199. Be prepared to trim the crossmember to accommodate. There is no cleaning pulse (dither) every 10 seconds on this transmission (unlike the 4L80E). This Solenoid Kit Will Fit 4L80E Units 1992 Thru 2003. perform a line pressure check to ensure that line pressure is correct at idle (typically 60 - 80PSI), and that it smoothly increases toward maximum (typically 190-240PSI) as the throttle position increases. Transmission 4L80 Rebuild. The 4L60-E transmission utilizes a line pressure control system during upshifts to compensate for the normal wear of transmission components. Please complete our Automatic Transmission Tech Sheet. 42LE, 42RLE Variable Line Pressure. As bore wear increases, oil pressure is reduced to the shift solenoids, which causes solenoid and ratio codes. Power it up. Holley Terminator X Max 4L80e 4L60e tuning Part 2 How to install your HD2 4l80e shift kit. tpd pro-line 4L80E 4L85E TRANSMISSION LOW (REAR) ROLLER CLUTCH FITS LATE '95+ Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best). 4l80elb1 4l80-e, 4l85-e line pressure booster kit Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together to provide progressive pressure increases as driving conditions become more demanding. 3) Sonnax "Sure Cure" kit (seems to be AFL, TCC reg, and boost valve all in one package plus some extra) (SC-4L80E) 6) Sonnax line pressure booster kit (4L80E-LB1) 7) Sonnax tool kit for AFL (77754-TL) 8) Dual feed the intermediate clutches internally 9) Rebuild with borg warner high energy clutches. The max line pressure can cause problems if the transmission isn’t modified for it. I promise you that the next transmission I have to replace or any other person I hear of needing a transmission I will be heavily promoting Monster Transmission and tell them that I personally use Monster Transmission. @ 2,800RPM. com for cost and lead time before ordering. An actuator feed limit valve assembly for installation in a transmission valve body having an actuator feed limit circuit for conducting hydraulic fluid to the hydraulically actuated components of a transmission, said actuator feed limit valve assembly comprising: a cylindrical valve sleeve having a plurality of inlet and a plurality of exhaust ports arranged in a radial. The 4L60-E is a fully automatic rear wheel drive transmission. The 4L85E is a 4-speed automatic transmission that was launched by General Motors in 2002. Very rough shifts at 1/4 throttle [high line pressure 140 to 170] Shifts get noticeably softer at 5/8 throttle [low line pressure 40 to 82]. Part of the issue is that the cooler lines on a 4L80E are not angled but come straight out of the case. Our transmissions have withstood. Turbo 400 Performance Specs The Turbo 400 is rated conservatively at peak torque of 450 lb-ft. Overrun Information (Overdrive). 275, 265, 257, 248, 233, 210, 197, 182. But a stock 4L80E and TH400 are both rated at 440 lb/ft for engine torque and 885 lb/ft for gearbox torque. The direct clutch is used in 3rd gear and also for reverse. Without scan tool you will have approximately 45-80 psi at idle and upwards of 300 in gear at. Changing transmission oil (4L80E) My RV is based on a P30 1998 7. Taking your car to the mechanic can be expensive. Transmission power control solenoid -- PCS -- valves are duty cycle-controlled components that manage the pressure of transmission fluid. Sonnax boost valve and OE pressure regulator valve MUST be modified to work in 1991 appli-cations. Note: 1998 and later C & K trucks and G vans use a deep pan and filter assembly. 00 per rebuilt trans job. That is located just above the shift lever on the transmission. 700R4 TV Cable. I think, it is the front line. It's a common issue for it to go bad. 48 first gear, 1. The main line pressure regulator valve also controls the volume of oil that is fed to the torque converter: This, in turn, has a direct effect on converter release/fill pressure, cooling, lubrication and, in some cases, TCC apply pressure. 4L80E Transmission Specifications The 4L80 nomenclature denotes that the transmission is a 4 -Speed, L ongitudinally mounted, and for 80 00 lbs. GM 4L80E (MT1), 4L85E (MN8), 4T80E (MH1) Transmission Overhaul Kits are offered on this page. NOTE: No alterations are required for 1992. No fuel in the fuel pressure regulator vacuum line. 4L80E Transmission Specifications The 4L80 nomenclature denotes that the transmission is a 4 -Speed, L ongitudinally mounted, and for 80 00 lbs. PASSAGE ID / AIR CHECK No part of any ATSG publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without written permission of Automatic Transmission Service Group. 42LE, 42RLE Variable Line Pressure. Dorman Products - 624-067 : Transmission Oil Cooler Line. Going to check line pressure, before I remove it to replace all the solenoids. Favorite Answer. Typical 4L80E converter charge pressure during high load is usually around 100 PSI, with a maximum line pressure of 180 PSI. The next 2 or 3 letters identify the model of the transmission. This transmission does not use a reluctor ring like the 4L60E. Label each pair of wires on the harness so as to not confuse them. This transmission is similar to the TH400 except that it is electronically controlled and has an overdrive. Transmission Line Pressure. My symptom was the oil pressure gauge pegged at 80 psi on my 2007 GMC Sierra Classic. Pressure gauge is hooked to the line pressure port of the trans. This is especially true on today’s lightweight engines that use mostly aluminum castings. The 4L80E (and its successor 4L85E) was the first Hydramatic to incorporate electronic controls — almost all of the THM400/3L80/3L80HD's components are interchangeable. Transmission Pressure Control Solenoid: REPAIR INFORMATION When the diagnoses is a failed transmission pressure control solenoid, the solenoid must be replaced. To perform a pressure test on your 2004R is not hard and can supply lots of info if you are having a problem. com for cost and lead time before ordering. The pressure may vary with engine rpm, which means low pressure at slow rpm and higher pressure at higher rpm. There are other things it could be. DESCRiPTiON QTY. 0L 4X4 1999-2004 Chevrolet Silverado…. Typical 4L80E converter charge pressure during high load is usually around 100 PSI, with a maximum line pressure of 180 PSI. Lay the valve body gasket marked "C" on the separator plate. I have a strange problem with my rebuilt 4l60e 1995, I have a constant line pressure of about 180psi in all gears including park and neutral. Remove the manual lever detent spring and roller assembly. Pull the vacuum line off the fuel pressure regulator and the pressure goes up to 56 then back down to 50 psi after it is replaced. 00] Speedometer - Mechanical [+$49. We inspected all hard parts and replace all parts not in as new specs. Mod Main Pressure Enable Low: If enabled, Trans Temp must fall below this to disable modulated main pressure. vehicle weights. Speedmaster™ line of EFI systems is all you need when deciding to upgrade your engine to modern electronic fuel injection. 1998 ATRA Seminar Manual Contents PDF free online Rules of Road Testing No Movement No Upshifts Bindups Kills the Engine Downshift (Coastdown) Clunks Downshifts at Closed (or Light) Likes. This unit is basically a THM 700-R4 with electronic controls added to the valve body. I got a 4L80E out of a '99 3500HD, it might have been a tow vehicle, it had 60,000 miles on it. Kent-Moore Tools J-45096-22. 4l80elb1 4l80-e, 4l85-e line pressure booster kit Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together to provide progressive pressure increases as driving conditions become more demanding. Get detailed information on the 2000 Chevrolet K2500 including specifications and data that includes dimensions, engine specs, warranty, standard features, options, and more. This is accomplished by using a fold-out circuit schematic with a facing page two. This modification will provide the torque converter with charge oil regardless of pressure regulator valve position. This is after about 20 minutes of driving, the trans temp is 120-125F. Order 271100P1 TCI Chevrolet 4L80E Heavy-Duty/Towing Transmission Package at CNC-Motorsports. NOTE: Be sure the five (5) o-rings are retained with the pressure switch assembly so they don’t get misplaced. If you have any questions about the installation or line pressure readings, please contact our technical support department. 4L80E / 4L80-E. 1999-2000 Chevrolet K2500 5. My problem is the stall speed blows through to redline (if I don't backoff) on the trans brake and the trans shifts are softer than I expected, I have been told to check the trans. 4th will only work if the 2-3 solenoid gets enough pressure. I have a strange problem with my rebuilt 4l60e 1995, I have a constant line pressure of about 180psi in all gears including park and neutral. A 4l80e has things stopped and to shift it releases things. Checking 4L60E Line Pressure What you should expect to see In D: 55-65psi Min. Pressure gauge is hooked to the line pressure port of the trans. com or call us at 1-877-782-5582. There is a cleaning pulse (dither) every 10 seconds on this transmission (Early 4L80E). 1997 & up 4L80E's have a smaller/weaker Overdrive Roller Clutch, Why GM did this is a mystery. Overrun Information (Overdrive). is an international network of transmission technicians, transmission rebuilders, and transmission shop owners who discuss every aspect of running a transmission repair facility. This is an ideal combination: smooth engagements and lower load on the pump at idle, but a greater increase in pressure as the transmission is worked harder. 3 with a GT2-3 cam and 2000 LS1B w/ COS 5. 0 liter gas engines after model year 2000 trucks. The average GM overdrive transmission will have 65-90 psi line pressure at idle on a gauge. Many of the other specifications can be gathered by deciphering the name. As bore wear increases, oil pressure is reduced to the shift solenoids, which causes solenoid and ratio codes. To perform a pressure test on your 2004R is not hard and can supply lots of info if you are having a problem. I tuned the tow/haul settings within the PCM a little to hold onto 1 thru 3 longer and I increased the line pressure by a few psi to compensate for the big trans cooler. 4L80E, 4L80-E, TRANSMISSION MASTER REBUILD KIT, 1996 ONLY, (34008EA-96) (11-12) This is a NEW Super Master Rebuild Kit for the 1996 Only, GM 4L80E Transmissions. It will fit many GM Vehicles equipped with 4L80E / 4L85E transmissions. In it the fuel pressure regulator is just below the distributor to the right. Rotor, slide and vanes LINE PRESSURE BOOSTER KIT 700R4-LB1 Instruction Supplement 4L80E-LB1 4L80-E, 4L85-E 4T65E-LB1 4T65-E 350-LB1 350 4R70W-LB1 AODE, 4R70W, 4R75W. 06:1 First-gear ratio would appear to be an advantage over the TH350's 2. tow/haul vs. The main line pressure regulator valve also controls the volume of oil that is fed to the torque converter: This, in turn, has a direct effect on converter release/fill pressure, cooling, lubrication and, in some cases, TCC apply pressure. com or call us at 1-877-782-5582. Which trans line is the high side ? front or back line.