Keep the internal parts in the order they were removed to keep track of everything. The kickdown function of General Motors vehicles equipped with the Turbo 350 automatic transmission is perhaps better known as 'passing gear.' As the accelerator is depressed, the throttle lever on the engine is drawn back by a cable, which in turn pulls another cable attached to the transmission, causing it to downshift into a lower gear. It can be removed separately once it's internal parts are removed.Īs you disassemble your transmission, make note of any obvious wear to parts that may need replacing. When rebuilding a TH350 transmission of any year or model, you can remove all of the internal parts down to the low/reverse piston with out removing the valve body. It's best to have it able to rotate around for removing and installing components. ![]() TURBO 350 INPUT SHAFT 30 SPLINE (300m material) High Performance. But it also requires that you clean all parts thoroughly and take steps. You will also need a good work space and transmission stand. SPEEDO DRIVEN GEAR 19T-GM WHITE.810' OD gear pitch left to right from top down image 848 Item A44848: 16.91. Transmission building involves careful assembly. So be aware if you aren't familiar with removing the transmission. All of the automatic transmission rebuilding video's out there start off with the transmission already out. If you're not familiar with this, the first part of the Basic Engine Building" video covers this and more. The length of the tail housing, the fluid cooler lines, and the torque converter also influence the capacity of the transmission. This capacity can slightly vary depending on the year it was made and the type of vehicle the transmission is used in. Of course you will need to remove the transmission from the motor and chassis. The Turbo 350 transmission has a fluid capacity of 10-12 quarts (9.5-11.4 liters). Every automatic transmission will need a universal clutch spring compressor as well as snap ring pliers and pic sets for removing valve guides. We recommend one for your specific model from ATSG (Automatic Transmission Service Group). The better kits will also include new valves and valve springs for the valve body.Ī transmission repair manual is a must. ![]() An automatic transmission shift kit is only needed if you want the gears to shift sooner, but it can also reduce transmission wear by reducing or eliminating shift overlap. Most higher end rebuild kits will include a new shift kit as well. The similarity of the Turbo Hydra-Matic 350C and the Turbo Hydra-Matic 350 are covered in this manual, along with some of the 350 updates. Usually included are all the bands, clutches, seals, sealing rings, gaskets and a filter and drain plug. The Turbo Hydra-Matic 350C transmission, first introduced in model year 1980, is a modified version of the previous THM 350 transmission, with the addition of a Torque Converter Clutch. Depending on what type of kit you buy, it should come with at least new steels and frictions. You'll need the appropriate transmission rebuild kit for your Turbo 350. Before you get started rebuilding your transmission, you'll need a few parts and tools.
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