gto transmissions

i have a 64 goat with the origional 389 3 duece. it has a powerglide i was wondering if a pontiac turbo 400 would bolt up

Cole,
Yes it will bolt up, but you will need to change the radiator (cooling lines version) get a correct flex plate (fly wheel) from a 1964-1979 389, 400, 421, 428, or 455, and pull the pilot bearing from the back end of the crank shaft. Install bolts.
Bob



GTOMAN1952

The yoke on the drive shaft will be larger, 32 spline. Also the drive shaft will
be about 3/4 of an inch shorter.