th350 rebuild kit with shift kit
Do NOT overtighten them because you can squeeze out and even cut the gasket. I do not recommend tightening the pan bolts to any torque spec. Installing stock gaskets can result in poor transmission performance and clutch failure (keep them far away from your assembly during the shift kit installation). The intermediate servo does not need to be removed to install the TransGo shift kit. Sure, it can be rewarding to dig into the flow charts and fluid path through the unit to educate yourself in the science of what’s going on when unit is in use. If the transmission has not been modified, four check balls are under the separator plate. Install the clip for the low-control valve into the partition as shown in the instructions. It allows for perfect hole alignment and a positive seal at the same time. It’s best to tap the pan gently near the pan rail with a soft-faced hammer instead of driving a screwdriver or chisel between the pan and case to get it loose. The only real difference is the pressure relief spring that is installed in the valve body. Remove the plate that holds the. 3. Clean the gasket-sealing surface on the transmission case. It may also help to loosen the manual shaft’s retaining nut so the range selector pivots on the shaft to facilitate installing the S-link. Last on your list of upgrades is the filler tube. Even though a gasket is used, a heavily warped plate may leak, which causes poor shift performance and clutch failure. It takes more abuse than the stock outer race, but can still fail in a high-torque application if it is used with the stock roller clutch assembly. It’s usually easy to access and only takes a few minutes. When trying to remove a retaining pin from a “blind” hole in the valve body, it may help to turn the valve body over and tap on the sleeve very gently with a screwdriver handle. You do not want the gasket to slip out of position because this can result in poor transmission function once it is placed back in service. There is no need to remove the valve to install the clip. The Raybestos Powertrain TH350 Stage-1 Performance Transmission Super Rebuild Kit contains upgraded friction clutch plates, premium steels, and more performance parts to deliver the strength & durability your hard working transmission needs. SK 350. I highly recommended that you replace the old modulator. Also, if you do drop the trans make sure to get a hardened and heat treated outer race for the sprag, Its the weakest part of a TH350 even a stock engine with a B&M shift kit … Master rebuild kit and stock replacement torque converter for the TH350 (Non-Lockup). Even so, the plate must be flat and the sealing surface must be in good shape or it may leak. Instead of providing a separate plate to install over your stock separator plate, the TransGo kit’s transfer plate is welded to a new separator plate. Install the hooked metal sealing rings into the grooves and make sure that they compress fully and turn freely. There is really no need to remove the valve from the case, just the retaining pin and old spring. Tighten the bolts very gently. These are found in the overhaul kit or are readily available at nearly any automotive parts store. The early units used a single O-ring on a recess in the tube. TH350 REBUILD KIT PERFORMACE RED CLUTCHES THIS KIT INCLUDES: 1. This doesn’t mean that you can’t experiment in that direction if you have the time and resources. We rebuild and buildup the TH350 Automatic Transmission with a B&M TransKit (PN 30229) in our 1970 Chevrolet Chevelle. Benefits of Banner Rebuild Kits from GMTransmissionParts.com, Detailed Listing of Parts this TH350 Overhaul Kit Contains. We want you to get the parts you need for your TH350 transmission. Place all the small parts in the supplied tray to minimize confusion during the installation and to keep from losing them on the shop floor. ---ALL PAPER GASKETS ---NOK FRONT PUMP SEAL. It is a very weak part and should not be used in any TH350 rebuild at any power level. The B&M® Transpak is the next step up from the B&M Shift Improver kit. If your application requires a converter with threaded pads look in our converter listings, This kit contains ALLOMATIC clutches and Raybestos "Steel plates." Going out past .060 may result in a slight delay on engagement. Because each application is different it often takes a few attempts and some minor adjustments to nail down the best tune for shift points. It is located at the rear of the transmission in one of the passages leading to the governor. $59.88 $55.77 $69.99. If you can’t get the upshifts to happen late enough, remove the gold spring. 4.9 out of 5 stars 8. Locate and install the TransGo separator plate– to-case gasket. If the transmission is being overhauled, the direct accumulator should be removed to drain out all of the old transmission fluid. Most adjustable modulators provide a range of upshifts: about 4 mph from one end of the range to the other. If your application requires a converter with threaded pads look in our converter listings, This kit contains ALLOMATIC clutches and Raybestos "Steel plates." I highly recommend replacing the old modulator because the rubber diaphragm inside it can tear; it also gets hard and tired with age and can affect transmission operation. TH350 Transmission, Level 3 Combo Kit, Red Master Kit / Shift Kit & Roller Race, 1969 to 1980. The drum easily accepts five frictions and this upgrade is recommended for all performance levels of the TH350 transmission. As well as supplying an extensive aftermarket customer base, Precision International also provides products to Original Equipment Manufacturers (OEMs). Remove all of the long 5/16-inch bolts that hold the valve body to the case. 200-4r th2004r transmission rebuild kit with filter, steels, bushings, raybestos frictions & borg-warner band fits '81-'90 gm cars (54008bf) TRANSTAR $208.88 $198.77 $239.99 The detent regulator valve spring goes in first. The aftermarket offers a hardened outer intermediate sprag race as an upgrade for the TH350 transmissions. It was used behind an engine making around 500 hp and 550 ft-lbs of torque. It’s quite likely that a good portion of the lower gasket of the separator plate will stick to the case, and the upper gasket will be stuck to the valve body. My TH350 does not slip, it only seems to shift slow because the car accelerates so fast that by the time I throw it into 2nd gear, it takes about 2 seconds or another 1500 RPM later until it actually shifts. It generally comes right off with a few light taps. Remove the governor cover retainer with a large flat-blade screwdriver or needle-nose pliers. 40. The TH350 1-2 kit can be installed without removing the transmission from the vehicle. This happens simply because the load is not distributed evenly to the outer race as it is with the much stronger 36-element aftermarket sprag assembly. Wish List Compare. Written by Cliff Ruggles and Posted with Permission of CarTechBooks. A complete thrust washer kit usually contains a shim (far left) that can be used on the rear Torrington bearing during assembly. Pro Super Overhaul Kit; '68-'79 GM TH350 (Non Lock-Up) SKU 328800. This kit includes all the rebuild components we use to build our Stage 1 TH350 units. Adding this shim may reduce the amount of shims required under the front thrust washer. ... 3 product ratings - Superior K350 Shift Correction Kit TH350 Automatic Transmission TH-350 THM-350. TransGo has been serving the transmission industry since 1959, providing products that are engineered to work together as a system for the best end results from your transmission. Another highly recommended upgrade for the high performance TH350 transmission is to install an aftermarket hardened input shaft (left). It’s also a good idea to smooth out any file marks left from this operation before installing the plate. Install the separator plate– to-case gasket from the TransGo kit. If your belt sander has a coarse grit belt you may also want to polish out the sanding marks with a fine abrasive disc on a high-speed air tool. For this reason, I do not cover any home-brewed shift kits. The springs control pressure produced by the oil pump and also affect transmission function. The rubber diaphragm in the modulator gets hard and tired with age and can tear, which affects transmission operation. As for prices to rebuild, you can get a standard TH350 rebuild with shift kit for about $300. When the other bolts have been removed, loosen both front bolts slightly very carefully. At a builder level, you need to be concerned primarily with shift performance in relation to improving durability of the transmission. In a high-performance application, especially where a high-torque engine has been installed and the vehicle will be drag raced with good traction, the input shaft can split and twist at the front lube hole. However, from a rebuilder’s standpoint, it is not a requirement. This Turbo TH350 Transmission Banner Rebuild Kit contains a TH350 Overhaul Kit PLUS a TH350 High-Energy Friction/Clutch Module.The Overhaul kit includes all the basic seals, gaskets and o-rings required to overhaul TURBO 350 transmissions model years 1969-1986.. Customer Questions & Answers In most instances, a few light taps and it comes right off. Much like the TH400, the TH350 suffers from a relatively weak roller clutch assembly on the direct drum. Replace the stock inner spring with the white spring from the kit. The plastic gear is easily damaged if it is dropped onto a hard surface. For the first few miles drive at various speeds; use light throttle only and move the shift lever to all forward positions. FRONT BAND. The retaining pin pushes easily into position once all the parts are correctly installed. It is not normally a trouble spot for these transmissions. The aftermarket direct drum also comes with a spiral lock ring to keep the retainer in place. TH350 Transmission Shift kit. JEGS Complete Transmission Rebuild Kit | Fits 1969-1986 GM or Chevy TH-350 (non-lockup) With 30 … Several different aftermarket modulators are available; each is color-coded with a stripe on the canister. For decades Precision International has been a worldwide supplier of quality products for import and domestic automatic transmissions. Never hit the cover with a steel hammer or with a hard blow anywhere other than the fl ange because you can damage the housing and reduce governor endplay. $79.40 $ 79. The governor springs are relatively easy to install and the governor does not have to be taken apart. Most thrust washer kits contain a shim that can be used on the output shaft’s Torrington bearing. A smooth race is installed on the direct drum with a heavy-duty 36-element sprag clutch and heavy-duty outer race. It’s not a big trouble spot for these transmissions, but it should get a close inspection and be replaced if the driven teeth show signs of wear, cracking, missing teeth, etc. Here are the contents of my shift kit. Using a hammer and large flatblade screwdriver or long tapered punch, tap the governor cover on the flange to remove it. REPROGRAMING SHIFT KIT FEATURES: Stick Shift… Apply some grease to the gasket to help hold it in place on the separator plate. Install the oil pan using the new gasket from the shift kit. or text to 856-400-0063; ... 350 th350 transmission rebuild kit with filter, modulator, bushings, steels, raybestos frictions ... transtar. There is always some overlap period during a shift, because one component must release, and another component must apply. This kit comes complete with steel plates. This requires extra care to make sure that you don’t move the gasket out of position. Recheck the oil level one last time, double-check the vacuum modulator hose connections, and then do some fine testing. Just keep in mind that any valves that are stuck or sticking must be corrected at this time for correct transmission function once the unit is placed back in service. The downfall to this design is that load distribution is spread out to the nine areas where the rollers contact the outer race. By road testing and making small adjustments, you can fine-tune the shift points for the best vehicle performance. The governor gear is plastic and holds up quite well for many thousands of miles. Install the gasket from the TransGo kit that goes under the factory support plate. Use a small flat-blade screwdriver to check the movement of all of the valves in the valve body. We rebuild and buildup the TH350 Automatic Transmission with a B&M TransKit (PN 30229) in our 1970 Chevrolet Chevelle. About the only parts not supplied in the kit are a new filter and gasket, which are in the overhaul kit. Stock transmissions have always been set up by the factory to provide smooth shift performance to minimize customer complaints. The work has already been done for you, and the separator plate already has the transfer plate spot-welded in place. Make sure the transmission has been sitting long enough so that the fluid is cool. SHARE THIS ARTICLE: Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Make sure it is fully seated all the way around the housing. However, this does present a few obstacles to overcome and is not nearly as easy as having the transmission on the bench. The (aftermarket) hardened race in this photo survived 71 high-10-second dragstrip runs behind a high-torque 455-ci engine before it exploded. Install four new check balls in the case. Step 2: Install the lower valve body gasket. Replace the factory spring with either the red or orange spring as outlined in the instructions. This can cause the ring grooves in the stator to close; the rings stick in the grooves. At least half a dozen shift kits are on the market for the TH350 transmission. Add to Cart. Basically, a short shift is typically evaluated as a firm shift. The aftermarket even offers a stronger hardened outer race as a replacement for the stock race. 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