350 or 400 Pontiac engine in '64 4X4?

[Agv63]

Originally Posted by D'Monsta

I know this is an old thread and I hope you are doing well. I wonder if you ever found your project and puta Pontiac engine in it? I'm trying to find out if the motor mounts/perches are in the right place for a 389 Pontiac to sit right under the hood and be able to use the same driveshaft? My truck is a 66 GMC with straight 6.. Any idea?

I put a 455 pontiac in my 63. I used the clamshell type mounts, with engine brackets from a firebird, and made my own frame perch to suit . Switch pitch 400 and 1pce driveshaft, plenty of space, i can drop it lower by 2.5" but mounts perches and headers become an issue then. Pics was when i was buzy with install. Sorry for the sideways images, it shows right on my phone but sideways on here.

Cheers adriaan.