I posted this in the general section as well and then I thought I should post it here.

I was given this trans and I want to see if it is a good trans to use for my truck project along with a 327 v8 that I have.

I was told it is a saginaw 4 speed out of a car. It has a cast iron case (not aluminum like a muncie). It has two grooves in the tail shaft.

I found numbers on the right (passenger side) main case as follows: there was an A15 by itself, an NF C4 and GM 338935.

I found numbers on the rear tail shaft section:
6261884 and GM3.

I found numbers on the shift cover plate: 4GM6261886 and a weird looking RP (maybe engraved or stamped in, not raised letters like the others.

Any help would be greatly appreciated.

Thank you,
Dan

If you didn’t skin a knuckle while you were working on your truck, you weren’t working hard enough!

53 5window 1/2 ton
54 3window 1/2 ton