16,232 Views. Home made shift kit - Club Hot Rod Extremely hard to shift, where do I start?? | Polaris ATV ... A) An automatic transmission transbrake is a modified or aftermarket valve body which puts the trans into first gear, and reverse gear at the same time. PDF Hi-Performance Transmissions SUPER T10 - Richmond Gear ATI Racing Transmissions - TH400 Drag Racing Transmissions TH400 Specs, Info, and Identification - Drivetrain Resource ATI's Turbo 400 Drag Racing Transmission. The basic cross members can be broken down into three groups: the Turbohydramatic 400 examples, non-TH400 examples and big block versions. Make sure the engine, transmission, body and frame are properly grounded. You are looking at a completely Remanufactured Turbo 400 High Performance 2WD Transmission. She also said it wouldn't stop moving unless she had it in neutral. 74140-01K • Backing Plate • Apply Plate Requires '91-later 3-4 apply ring stamped with number "7", measuring 3.671" to 3.682" in height. At wide open throttle it shift fine but at part throttle the 1-2 shift happens at around 45mph and the 2-3 shift happen at around 60mph. Change TH350 & TH400 Shift Points with an Adjustable ... Reverse Manual Valve Body | Forward Pattern Valve Body Oil Your Super T10- transmission comes with an Transmission Shifting Hard From 1st to 2nd & How to Fix ... A few weeks later my wife was using it in the yard and couldn't shift at all unless she turned the machine off. Jump to Latest Follow 1 - 20 of 20 Posts. Changing the fluid solves plenty of transmission issues but if the problem of automatic transmission won't shift into 3rd gear persists, the parts you should check are the throttle cables. Hard coated to extend pump life. TH400 - Jake's Performance Turbo 350 does not offer additional versatility in terms of gear ratios and as you said it was not as beefy as the Turbo 400. Cable-operated shifter works with all Turbo-Hydramatic TH200, 250, 350 and 400 transmissions. Building A Bullet-Proof Turbo 400 With ATI Performance. 8 Min Read. .125 is the maxiumum for 1-2. but you can drill the 2-3 .140. but for the 2-3 you can grind the three raised castles off of the accumulator and put it in up side down. Sep 22, 2009. Our TH400's use exclusive proprietary parts that are only . I could be wrong but I believe the vacuum mod controls when it shifts not how hard it shifts. Insert the cotter pin in the swivel, tighten the large nut and bolt on the bracket. It is machined into the transmission in most cases. Belt broke on a trail ride and we replaced with a oem belt on the trail. Place upper valve body gasket (has "C" punched in it) on to the B&M separator plate (use grease or petroleum jelly to hold it in place). The only way to make it shift is by using the emergency shifter (a short-shifting shaft sticking out the left lower side of the engine, use the supplied gear change tool). Millions of GM cars and trucks have been built with Turbo 350 automatic transmissions. 4L80E Shift Kit. Problem is it will not shift out of 1st gear. It is a high performance transmission and will shift as ordered. Speedometer Drive and Driven Gear: If you are replacing a 4 speed or a Turbo 350 with a Super T10 or Super T10 Plus, you will be able to use your original speedo driven gear holder. 2 and 3 speed versions available with many gear set ratios to choose from. You have to push the brake to start it in gear. Common problem is the rubber tube that connects the hard line to the transmission. For lower shift points at wide-open throttle, install stronger springs. If the shift points are too early, use a lighter weight and/or spring. We have extensive experience building the TH400 for all types of applications. A hard to shift transmission problem is usually due to the car transmission declining to move gears. will . But there are a few modifications you can perform to improve their durability. Simply turn the input shaft by hand and attempt to shift the transmission into each gear. Reply With Quote. I hope everyone had a great Thanksgiving. The TH400 and 4L80E have been around for a long time, and these units are generally trouble free. The 3 speed Turbohydramatic 350 and its big brother the TH400 were some of GM's most widely used automatic transmissions from the mid 60's through the early 80's. The TH350 was mainly factory installed with small blocks and the TH400 with big blocks and high performance and heavier duty vehicles. And except for the shift knob - it is accessible from underneath the car. but do so with thinner apply and backing plates, only make the flex worse and do not notably improve 3-4 clutch durability. Upgrades Available Here. The most difficult cross members to locate are the big block Turbo 400 models along with the big block Four Speed/HD Three Speed jobs since they are one-application components. Worked great. This happens by reducing the slippage and shift overlap that is inherently built into a transmission to create those smooth shifts. #8. While the unit is indeed one of the stoutest of its kind, trouble can still occur. Do not tighten so much that it squeezes the delrin bushing in the bottom of the column. the transmission will shift hard when first put into reverse or drive,especially when the car is cold after engine warms up the shift into drive or reverse is not near as hard. Torque these bolts to 45 ft/lbs. Los Angeles, CA. If the motor does not work, the bike will not shift gears. check the vacuum lines. $ 75.00 Select options. Transmission Shifting Hard from 1 st to 2 nd: The Reasons turbo 400 shifting. I have a 72 Prostreet Nova with a blown small block and a 400 turbo. ATI has T400 street rod and drag race transmssions for vehicles making 600 horsepower to 3,000 horsepower! This makes it difficult or impossible to cruise at high speeds in overdrive. 3. What can I do to make it shift earlier under light throttle. Doing so could make it hard to shift. Sometimes, you may also need to change the gear cable (in a cable shift mechanism) if the cable has become hard with age. Sep 22, 2010. frickenbored said: I can't seem to figure out why my th400 is shift so late. You need to drill the feed holes shown in this picture. We sell a cable correction kit for Holly and Edelbrock carburetors. #7. Some "case saver" kits were sold in order to make the 350 a bit more durable, which speaks volume on its durability. In this article, we're . Add to Library. PDA. The shift linkage is situated in the transmission tunnel of the automobile. At some point, even the best transmissions need . ATVs with an electric shifter, like the Honda AS models, uses an electric motor to shift through the gears. Photo #3: The flywheel is held to the crankshaft with five 7/16" X 11/16" fine thread bolts with serrated lock washers P/N 19-62. Newsgroups: alt.hotrod From: Bob Hale <hale@brooktree.com> Subject: Chevy TH-350 shift points Date: Mon, 04 Apr 94 17:52:13 GMT Jon Warwick wrote: > I have a TH-350 sitting behind a Chevy 350 in my project >truck. There were three levels of TH400 builds: Level 2 ($1,395) will hold up to 450 hp; Level 3 ($2,195) up to 550 hp; and the Level 4 ($4,395) package will handle up to 850 hp. Re: Turbo 400 firmer shifts. All TH350 transmissions include a new pan. Make sure the raised area is facing to the transmission. Making your own valve body kit. TH400 Raybestos GPZ Clutch Module RGPZ-007 1965-1990. Identifying Turbo 400 By the Tag. The B&M Shift Improver Kit can help increase the performance and durability of your stock automatic transmission. does the thermastat have a wire that goes to the fan? The TH400 doesn't require anything super fancy to get a firm shifting unit. Add Performance Torque Converter. Install the plate and gasket against the case and use a clean pan bolt to hold it in position for now (See Fig. It is for cars and trucks with up to 650HP. Our base model TH350 has lived at over 600 HP reliably. To lower the shift points turn the screw counter clockwise, this will also soften the shifts. This popular transmission was found in GM's cars, as well as, Rolls-Royces, Jeeps, Jaguars, Ferraris, etc. By eliminating many restrictive oil flow controls in the transmission's valve body, it allows the transmission to shift more firmly and reduce slippage and shift overlap, providing crisper shifts and reducing wear. Some shift kits contain a modified 1-2 shift valve, which eliminates the automatic upshift function and provides the operator with full manual control of first and second gear. The TH400's high-level of adoption could be tied to its remarkable features, and it proved that people can once again rely on GM transmissions. Other Articles - March - 2016 Improve Your 400 and 4L80 Rebuilds. October 21, 2016. We do stock rebuilds all the way up to 3000+ HP Pro-Mods. Photo #4: Make sure the torque converter is installed all the way into the front of the transmission . Re-adjust if necessary." Gregg 1972 Chevelle 454 Pro Street. The B&M TH700-R4 Kickdown Kit includes a sleeve and requires the use of a factory '94' plunger; plungers that are stamped '94' can be found in V8 Camaros . My th400 shifts hard sometimes and tends to shift earlier than I want sometimes. The gearbox's unparalleled strength is combined with an ability to survive in a myriad of . Check the shift points against earlier records. You'll find the identification tag above the transmission pan on the drivers side. Billet aluminum pump. TH400's are what we cut our teeth on. It has been the most-used transmission in heavy cars for drag racing for many years. I paid $23 for one in 1977 for my TH350. The TH400 is an early model, non-computer-operated transmission widely sought after by car enthusiasts for its internal strength. Cable shift mechanisms however feel smoother and are used on front wheel drive cars mainly, as it's easier to package. It is a 3-spd automatic transmission and is also available with a manual shift valve body. View Full Version : 400 turbo shift point adjustments. Allows you to tailor shift points. You should be getting around 20-25 psi vacuum at the pump. To maintain fourth gear, you need a TH700-R4 Kickdown Kit or a Throttle Valve Plunger & Sleeve for 700-R4. goes into the 5/16" hole that you drilled in the shift arm. Get a 50 dollar shift kit into it. can create a slide bump shift because the accumulator piston will bottom in the bore too fast and the oil pressure can spike at the end and create the slippy apply with whack at . The cable arm on the transmission must be correct for the application (for example: Turbo 400 for a Turbo 400 transmission) and of course, correct for the shifter used. See More. and released during the shift then a weaker spring will create a firmer shift and a heavier spring will create a softer shift. Harsh or Just above stock. January 2, 2016, 02:18 PM. 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. Installing the B&M kit does require transmission pan removal, separation of the valve body, and the drilling of hole(s) in the valve body separator plate, but this is something you can do at home. And 8psi (per TM's) after the regulator (i have mine set to 10 or 12 for smoother shifting.) At first I thought that was the only issue but after replacing that it was still hard to shift. Vacuum regulator is on the pass. Remove Oil Pump, Manual Shaft and Speedometer Gear Housing .Find great deals on eBay for th transmission parts. TH350 TH400 Torque Converter 9 1/2 Inch Billet Converter Turbo Raptor 9. make a shifter for. Lokar Column Shift Linkage is designed to work with GM style factory or aftermarket column shift steering columns. GM, TH350/TH400 Adjustable Vacuum Modulator. I found Gearstar online (www.gearstar.net) and clicked the "TH400" link. If not, or you would like to replace your original, you can purchase Richmond part number 345215. Number 550. manual reverse pattern. Now available with the award winning ATI T400 SFI Certified SuperCase. If you are unable to turn, or shift the transmission, please contact the distributor where you purchased your transmission for further instructions. In this video, I talk a little bit about adjusting my transmissions shift points and firmness. shifts to taller gears >way too soon (the motor dosen't get to rev very high at all in L1 >or L2). I know that I will have a problem with getting enough vacuum to work properly but it still should shift late I think. a factory turbo 400 kickdown switch mounts above the gas pedal like the air induction switch on an 80-81 z28. Oct 2 . Sometimes on a newly rebuilt 700R4 or 200-4R transmission, it may not make the 3-4 shift when first . Too soft of a spring on an applying acc. gsmikie. Remember, the cable has to be pushed down completely. 7. Location. The trans is rebuilt with all the good stuff plus a fairbanks shift kit. 18. The throttle pressure is minimal, so the opposing governor pressure is able to act on the 1-2 shift valve at lower road speed so the shift may occur at 15 MPH. As with all Jake's Performance transmissions they include all new friction clutches, bands, steel plates, soft parts, filter, modulator (if applicable), as well as hydraulic upgrades, and other modifications depending on power level. TH400 Transmission Level 3 - 400 Raptor Transmission. It may also totally stall the shifting. If its . Another example, with hard acceleration, the throttle pressure is maximized, so the opposing governor pressure must build to a higher value (more road speed) until it is able to act on . The harder the shift, the less wear is occuring on the internal clutches of the tranny. In this vid the process of removing the spring from under the front accumulator piston is demonstrated. Wiped down the secondary (rear one) with brake clean and clean paper towels. 03-20-2004, 11:57 AM. How to fix: Get the bushes replaced. 3 Answers. and with those gears will have to mess with the governor likley. Instantly noticed creeping and difficulty getting into gear due to the load on the tranny. GM Turbo 400 TH400 Manual Valve Bodies. try feeding 12v to the terminal on the side of the trans. Robust reverse lockout and positive detents prevent inadvertent shifter movement during hard driving. Durable steel construction built to take years of abuse. It could either be to change from 1 st to 2 nd gear or to change from 2 nd to 3 rd gear.. Technical Support (707) 544‐4761 6 www.bmracing.com 9. I rebuilt the trans myself and inspected everything very carefully so I know theres no bad parts in . You also block the 2-3 accumulator feed hole in the valve body. side of the IP. I plan on doing a shift kit soon, at which point I plan on replacing the vacuum module and kickdown solenoid too. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . 74_Chevy . Jon Kitzmiller, MSME, PhD EE, 32 Ford Hiboy Roadster, Cornhusker frame, Heidts IFS/IRS, 3.50 Posi, Lone Star body, Lone Star/Kitz internal frame, ZZ502/550, TH400. 1980 Chevrolet Citation-Maintenance & Repair. Automatic Transmission, 3-Speed, Ultra-Bell Bellhousing, Reverse Shift Pattern, Full Manual Valve Body, ER310 Input Shaft Material, GM, TH400, Each Part Number: FTI-TH400-5UB Not Yet Reviewed But, GM's TH400 uses a combination of vacuum line at low speeds and […] They all share similar components and are designed to improve shift performance by increasing line pressure, volume of fluid to the clutch packs, and timing of the shifts for less overlap and shorter/ firmer shifts. FTI TH .. FTI Transmissions & Converters Reverse Manual Valve Body TH General Motors introduced the TH transmission in It was first used in The performance aftermarket stepped up with heavy-duty parts to make them even better.. The TH400 or Turbo 400 is a good transmission that was used in several cars years ago. I have a freshly rebuilt turbo 400 that shift very late under part throttle acceleration...like 3,500-4'000 rpm. Post. When it comes to a rugged, automatic transmission, the General Motors Turbo 400 is known as a brute. I adjusted the vacuum modulator all the way out..counter-clockwise and that where it shifts. The B&M Adjustable Vacuum Modulator (Part# 20234) comes pre-adjusted for 'normal' shift points, but it is fully adjustable (see below), allowing you to customize the shift points (within a range of 2-4 mph). Heavy Duty 3-4 Backing Plate Kit Fits 4L60, 4L60-E, 4L65-E, 4L70-E Part No. try it with vacuum hose off..it will shift later but for real u should have the kickdown swith hooked up. It tells the transmission what kind of load is being put on it, allowing the transmission to react with the proper line pressures and shift points. Sometimes the primary will drag the belt at idle a little causing the hard shift. Got the machine home and totally disassembled the primary clutch (front one) and cleaned. 962. One such complex issue is auto transmission shifting hard from 1 st to 2 nd.Even experienced mechanics struggle to find out the exact reasons for this problem. If the detents don't match, you can create a missed shift or an over-shift situation. 8). Looks like a simple B&M shift kit to me. Do not become alarmed if the shift points are not ideal on the first or second try. Before installing the transmission into the vehicle, make sure that the transmission turns freely. The 3rd feed hole can go bigger, but I would recommend .140" as the high end. manual forward pattern. The mechanism of an automatic transmission is complicated and it takes time, money, and expertise to solve if there is any problem with this component. Our "stock" rebuild is strong enough for over 600 HP repeatedly yet functions like a stock transmission. Learn more. converter bolts on. The stainless steel rod is designed to be cut to fit individual applications. Here's an exploded view of al of the components that make up a Hughes Turbo 400 build. Although not quite the heavy-duty performer as its big brother, the Turbo 400, the Turbo 350 transmission is a fine, durable, capable, and when modified, stout performer in its own right. First it got hard to shift to a point where I stripped out the Bellcrank. This 4-Stage TH400 transmission valve body shift kit offers the most control over how your GM Turbo 400 automatic transmissions shifts and is easy to install without dropping the transmission. I have a problem in that the trans. This is a very easy . This modification yields a firmer second to third shift. I buy expensive shift kits to make my shifts firmer If you bought an aftermarket vacuum modulator, chances are its an adjustable unit, or calibrated for a bit firmer shifts. #2. The fact that it is not electrically actuated by solenoids means it requires other apparatus to regulate shift points. Keep in mind that, if such a valve is installed, the transmission now shifts into low gear at any vehicle speed, when the manual low gear position is selected. by krazyhorse1 » Fri Apr 17, 2009 12:59 am. There always comes a time when the old transmission shows signs of wear. A defective cable with excessive slack is likely to create issues with smooth shifting of the gears. TH350/400 Shift Point Adjustment. This is why when the engine is off you get no belt drag letting it shift a lot easier. car leaves very hard but shakes and I have to pedel best 60 ft 1.476 @ 6.45 and 105 mph, looking . You can get a cable button off of a junk GM vehicle and weld it to your throttle valve lever. This linkage turns the gears by shifting them to the desired position. The vacuum modulator is a vital component of automatic transmissions. Top. Only turn the screw two full turns at a time, reconnect the vacuum line to the modulator, and then test drive the vehicle. When I fixed my timing and tuned my carb better the shifts got softer unless I hit a sweet spot, and they also came a little later. Also, the trans will shift harder with a stock converter than with a high stall converter, the high stall slips more. As the linkage is situated above the transmission there is little space to reach the upper retaining pin. The Turbo-Hydramatic 400 (TH400) automatic transmission can be found behind large, powerful engines on Chevrolet and GM cars and trucks from the factory, as well as Jeep, Cadillac, Oldsmobile and many others. Whichever one you encounter is usually very annoying and can make your driving experience highly unpleasant and can even result in an accident. T-400 Shifts Hard. TH350s use a cable connected to the carb linkage, 700R4's use TV cable, Ford C'4's have a rod, and Chrylser's Torqueflite used a cable as well. Kitz. 69bu. As long as power is supplied to the valve body the vehicle will not move. $ 699.00 Select options. I was looking for any one who may have the know how of making a turbo 400 start in second and still maintain auto features if left in drive, in a stock suspension 69 chevelle with a blown 540 on 29x11 . make sure the vac line from the moudlator is hooked to intake manifold vac and not ported vacuum on the carb the trans needs t be hooked to the intake vaccuum if it is hooked to the intake and it is shifting late and the only thing you changed was the . jw 30217-F. $325.52 $309.24. This is done in part by applying electrical voltage and current to the valve body assembly. Your choice reverse shift pattern with or with out clean neutral, brake in any gear or (for safety reasons engine braking available only with clean neutral.) Refer to the chart at the end of these instructions and repeat the procedure in Steps 1 thru 5 until desired shift points are achieved. Some signs of issues . I recommend drilling them both to .125". This unit is designed for use with select applications, including GM TH400 and TH350 transmissions. Changing this trans back up to a hard shifting B&M shift kit. $239.99. If it gets real tough, turn the engine off, put it into gear, push on the brake and start the engine. Billet steel stator tube assembly. jw 30218-R. $325.52 $309.24. BTW the converter is 4,000 stall. then you will have good and hard shifts. At least half a dozen shift kits are on the market for the TH350 transmission. Special design 300M input shaft 1-3/16 27 spline. 8. $ 2959.00 Select options. Gears make grinding sound on quick shifts Nearly every automatic transmission has some kind of kick down apparatus and they are all different. Simply put, an automatic transmission, whether an early or late model, . So, it's really not really a tag, which can make it a bit more difficult to identify if the transmission is really greasy. Contact the distributor where you purchased your transmission for further instructions | transmission brake Kits | JW Performance < >. Modulator is a high stall converter, the less wear is occuring on the trail T-400 shifts hard sometimes tends... We replaced with a oem belt on the tranny I think engine is off you get no belt letting! It wouldn & # x27 ; re x27 ; s are what we cut our teeth.! Stock transmission requires other apparatus to regulate shift points are not ideal on the first or second try paper.. There is little space to reach the upper retaining pin of ATF fluid... With a high Performance transmission and is also available with many gear set ratios choose! Lot easier but there are a few modifications you can purchase Richmond part 345215! Use a lighter weight and/or spring TH400 - Gearstar Performance... < >! Aftermarket column shift steering columns, trouble can still occur the transmission there is little space to the. 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The gearbox & # x27 ; t require anything super fancy to get a firm shifting unit &. And use a lighter weight and/or spring known as a brute know that I have... Gears by shifting them to the terminal on the internal clutches of the transmission whether! //Www.Chevelles.Com/Threads/How-Much-To-Adjust-Vacuum-Modulator.146481/ '' > trans brake | transmission brake Kits | JW Performance < /a > 962 late. Millions of GM cars and trucks have been built with turbo 350 transmissions! Turbo 350 automatic transmissions 3-4 shift when first is it will not shift out of 1st.... 4L80E have been around for a long time, and these units are generally free! The Bellcrank alarmed if the shift, the cable has to be cut to fit individual.... Likely to create issues with smooth shifting of the column disassembled the will. With Affirm on orders over $ 50 cut our teeth on I recommend. - Gearstar Performance... < /a > converter bolts on | JW Performance < >... Way up to 650HP kit to me other apparatus to how to make a turbo 400 shift harder shift and! It was still hard to shift, the high stall slips more perform to Improve durability! In this picture and will shift harder with a stock transmission GM vehicle and it... Rubber tube that connects the hard line to the load on the side of the trans myself and inspected very... With select applications how to make a turbo 400 shift harder including GM TH400 and 4L80E have been built turbo... Is situated above the transmission the Bombproof TH400 - Gearstar Performance... < /a > shift! Module and kickdown solenoid too Fits 4L60, 4L60-E, 4L65-E, 4L70-E part no or a valve... Built to take years of abuse like a stock transmission shifting - the H.A.M.B. < >... And with those gears will have a 72 Prostreet Nova with a stock transmission find identification. Paper towels get no belt drag letting it shift a lot easier are to! Modulator all the way up to 3000+ HP Pro-Mods Chevelle < /a > TH400 Adjustment. '' > Installed new belt now creeps and almost impossible to shift the transmission there is little space to the. Vehicle will not move //www.polarisatvforums.com/threads/extremely-hard-to-shift-where-do-i-start.66568/ '' > TH-400/TH400/400 - TransmissionCenter.net < /a > 4L80E shift kit do if are! And can make your driving experience highly unpleasant and can even result in an accident Improve your 400 4L80. Certified SuperCase Installed new belt now creeps and almost impossible to shift < /a > PDA //bangshift.com/forum/forum/bangshift/tech-section/1077793-turbo-400-shifting '' Installed... In part by applying electrical voltage and current to the fan s are what we cut our teeth on unit. Gm cars and trucks have been built with turbo 350 automatic transmissions vacuum modulator ride... Know that I will have a problem with getting enough vacuum to work with GM style factory or column... Under the front accumulator piston is demonstrated a problem with getting enough vacuum to work GM. Raised area is facing to the transmission in most cases now available with many gear set to! Unparalleled strength is combined with an ability to survive in a myriad of ; as the stall. To start it in neutral one of the transmission pan on the drivers side vacuum modulator & # x27 ll! Gm style factory or aftermarket column shift steering columns movement during hard.! Repeatedly yet functions like a stock transmission the first or second try great deals on eBay for transmission! Shift, where do I start???????????. And except for the shift points and firmness process of removing the spring from under front. Clean and clean paper towels ll find the identification tag above the gas pedal like air! It shift earlier under light throttle https: //www.polarisatvforums.com/threads/extremely-hard-to-shift-where-do-i-start.66568/ '' > TH350/400 shift point adjustments M kit. Second to third shift regulate shift points and firmness where you purchased your transmission for further.! Your throttle valve lever ; re a firm shifting unit 1 - 20 of 20.! Shift harder with a oem belt on the first or second try,. Many gear set ratios to choose from but there are a few modifications you perform. Clean and clean paper towels either be to change from 2 nd gear or to change from 1 st 2! Cable button off of a spring on an applying acc this picture //www.prcforum.com/threads/installed-new-belt-now-creeps-and-almost-impossible-to-shift.52265/ '' > how do make! With GM style factory or aftermarket column shift steering columns 4L80E have been around for a time. Start?????????????! Soft of a spring on an applying acc a newly rebuilt 700R4 or transmission. The vacuum modulator General Motors turbo 400 firmer shifts - Dragstuff < >... Also, the cable has to be pushed down completely '' http: //www.indianachevelles.com/index.php/membership/torquetalk-newsletter/43-torquetalk/torquetalkarticles/164-article-th350-400-shift-point-adjustment '' > how I. ; s use exclusive proprietary parts that are only into the front accumulator piston is demonstrated 4L70-E part....