Mechanics

CAN I CHANGE OUT THE OVERDRIVE TRANNY FOR A 350 OR 400 TURBO TRANNY

1988 GMC Sierra • 30,000 miles

I have an 88 GMC Serra 4x4 with 350, overdrive tranny. I am noticing a hard shift between 2nd and 3rd and not much power. I am wondering if I can change the overdrive tranny out for a 350 or 400 turbo tranny and if I can do I have to change out the transfer case.
Avatar
Scott Carver
July 26, 2012.



Would you be going to 2 wheel drive or staying in 4 wheel?

Roy


ASEMaster6371
Jul 26, 2012.
Staying 4x4 just want better performance and towing power.


Tiny
Scott Carver
Jul 26, 2012.
350 trans works well and geared well. Not sure if the tranfer case will work I know the new process cases work well with the 350. You may have to get diferent driveshafts but you wil know when you fit them up there.

It is not a direct fit. You will have mix and match some parts to get where you want.

Roy


ASEMaster6371
Jul 26, 2012.