Any difference in trans lenth??

70BIGBLOCK · 04-09-08, 10:23 AM

I am not sure if I should be trying to match this up with a 2nd gen camaro
type car since its a chevy motor with a chevy trans. The car is a 70 firebird
with a inline 6 and a powerglide trans.

1.Would the crossmember trans mount still be in the same location as a pontiac
turbo 350 trans??

2.or even if I went with a chevy V8 with a chevy TH350 trans would it still mount
up in the same location.

Just trying to find out if the crossmember was different with the POWERGLIDE trans.

poncho1961 · 04-09-08, 11:05 AM

There were different cross members offered with the different transmissions. I know there is a specific for the T400. I swapped from a T350, to a T400, to a 4 speed and changed a crossmember in there at one point. I believe the frame will have multiple holes to accommodate different trans and engine setbacks, so you should have some adjustment there.

Chuck · 04-09-08, 04:52 PM

T-400 and 4 speeds share the same crossmember. T-350 and powerglide are the same.

poncho1961 · 04-10-08, 09:53 AM

Quote:

Originally Posted by Chuck

T-400 and 4 speeds share the same crossmember. T-350 and powerglide are the same.

As Chuck said, but keep in mind the location the cross member may change on the frame going from a chevy six to a V8. If I remember correctly, the frame is drilled for different mounting locations for the cross member.