Re: Overdrive Transmission Swap Info for GM units

by driveit Wed Apr 23, 2014 9:08 am

I have been checking for a month now. I found one, but it has the electronic speedometer. Don't know how to switch it out. It was in a Camaro.

by driveit Wed Apr 23, 2014 2:36 pm

Gonna wait on the tranny for now. Unless it is an unbelievable deal. Maybe I can still make it to the knoxville show with my TH350. I am guessing and hoping that it will be less that 150$ for gas. Heres to hopin!

I think now since I am not on a time crunch just to get another gear I will start looking for a 5 or 6 speed. That is really what I wanted anyway.

by thatfnthing Thu Apr 24, 2014 10:33 am

IIRC in most 5 or 6 speed transmissions, 4th gear is 1:1 and 5 and 6 are both OD. So you are still facing the same issue with the rear gearing.

If gas mileage is your overriding concern right now and you indeed have a 3.08 rear gear, you are better off swapping the rear gear to 2.73 and leave your TH350 alone right now (assuming it runs well). It will be cheaper and more cost-effective.

by driveit Thu Apr 24, 2014 11:41 am

I have a 2:73 in it right now, but I have a 3:08 in the shed at my mom's place.

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