deac Posted February 10, 2016 Share Posted February 10, 2016 (edited) Hi, I have a '40 Pontiac Torpedo coupe. It's built off a GM c-body chassis which is shared with other GM divisions. The car is not modified and has the 3-spd manual. Is the 3 spd transmission shared with other makes from GM at the time? My thinking is that this trans was a generic GM trans and any division that opted to use it in their models could change the gear ratios to suit the rest of the driveline but the case, the tail, and a lot of internal parts and seals were the same regardless of the GM brand. Does my thinking make sense? Any help on this would be appreciated,Chris Edited February 10, 2016 by deac (see edit history) Link to comment Share on other sites More sharing options...
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