Home Forums Gear Hunting Trucks and Four-Wheel Drives Newer Transmission on an Older Engine

Question for them on here that might know:

I've got a '77 GMC 3/4 ton with a small block 350 and a 4 speed manual transmission. I've also got a '92 Chevy 1/2 ton with the 4.3 and 5 speed manual transmission. I still get 20 mpg on the Chevy (240,000 and counting) and use it as a fair weather commuter, but I know she'll die eventually. When she does, I was wondering if it were possible to bolt up that 5 speed to the old '77. The way I understand it, the 4.3 was basically a small block 350 they cut 2 cylinders off of. Given the common parts so ubiquitous that make GM trucks so damn cool, I was hoping to get OD in the '77 so it wasn't screaming when I hit highway speed.

Thanks,

Jason