Impossible. GMC didn't make a 270 in 1965.

Find a '62 or earlier GMC 270 and it will bolt up to you existing bellhousing in your '50. You'll have to use the GMC flywheel.

The front mount is a little different in that the motor is longer.

Check the Tech Tips link at the top of this page. The story about swapping in a 302 will give you most the details you need. The 270 and 302 are almost identical externally.


1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...