If you actually have a 261 rather than a 216 I think your best bet would be to stay with it.

I'm not sure the differences between the 250 and 292 from a parts or space standpoint would matter much. I think the 250 would be easier to mount because the commonly available V-8 mounts would work. The 292 because of its staggered mounts would be more of a challenge to mount.


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...