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Username Post: 3 spd manual question        (Topic#352407)
Posts: 82

Reg: 09-26-17
08-09-18 10:35 AM - Post#2742477    

Has anyone seen or heard of rebuilding the standard 3 spd tranny on a 49-52 chevy car with the 3rd gear being a bit taller than what's in there already? I know changing the rear is done a lot but didn't even know if it was possible.


Chevs of the 40s

Posts: 27999
Loc: San Francisco, CA
Reg: 11-26-02
08-09-18 01:15 PM - Post#2742500    
    In response to beachb

No, high gear on a 3 speed trans is always straight through, or 1:1. Of course there are also 3 speed + overdrive transmissions, but to use one of those you would have to convert to open drive.

If you want to keep the stock 3 speed with a torque tube, your only choice for taller gearing is to swap in a powerglide center section. This gives you a 3.55 rear gear and is a very popular swap. You can also get new 3.55 gears from several vendors if you have problems finding an original PG rear.


Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


Chevs of the 40s

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