Ask them who their local parts supplier is. Your tranny will be the BOP TH350, which is very similar to the TH-350C non-lockup version.Ĭall a friendly local tranny repair shop or local machine shop. The TH350s low rotating mass, gear ratios, and overall lightweight. Although the design of the TH350 is fairly primitive compared to todays computer-controlled transmissions, major disassembly should be left to a. BTEs TH350 transmissions are well suited for street and race track performance. The fully automatic transmission was equipped with three forward gears and one reverse gear. The Haynes Techbook for GM automatics is pretty good too. Chevrolet first produced the TH350 transmission for the 1969 model year. The ATSG (automatic tranny service group) book for TH350 is pretty good, get it from tranny parts supply warehouse. You can build your own TH350s, if you've got some mechanical ability, and enough room to take it apart.
Tranny works well so far, and cost a total of $300 to rebuild. I run one behind a 425 HP 400 in a '67 LeMans. The TH350 transmission is one of the most popular GM automatics for high-performance applications. You can find a used Turbo 400 transmission for. Just wondering what the capabilities are of the trans. Used Th350 Transmission For Sale Near MeTransmissions For Sale Need a Transmission We have lots in stock. Mild cam (don’t know the specs but I think it is the edelbrock performer package one) My engine is not a HP/Torque monster so I am assuming that I should be ok having a TH350.ĦX #8 heads (101cc combustion chambers. TH400 can take more HP/Torque than the TH350.Ģ) the TH400 is a better design than the TH350, but why? I don’t know? The TH350 transmission was introduced in the 1969 model year as the successor to the GM Powerglide automatic transmission. It is widely considered to be one of the greatest of automatic transmissions ever built. Besides demonstrating an ability to withstand a moderate amount of pounding in stock condition. The TH350 is an automatic shift, three-speed transmission. I have seen others with this combo and was wondering:ġ) What are the drawbacks to having a TH350 mated with a 400ci engine?Ģ) What needs to be done to the TH350 to ensure it performs properly and has a long life?ģ) What are the advantages of having a TH350 mated with a 400ci engine?Ĥ) What HP and Torque can a TH350 withstand?ġ) the TH400 is a heavy duty trans and the TH350 is a medium duty trans. The TH350 transmission is one of the most popular GM automatics for high-performance applications. JEGS 555-60300 GM TH350 Performance Transmission Features: Handles Up To 450 HP Firm, Crisp Shifts Designed to work without a throttle valve or kick-down. I have a 400ci engine with a stock TH350 transmission.
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