273 / 318 Exhaust Manifold Question

superstock64polara said
Okay, now you've really peaked my interest. I love the 273 Commando in my Barracuda, however it's a little soft on torque. The hot ticket apparently, is to use a 318 short motor and transfer all the 273 HiPo top end over to the 318. The 273 heads are 920 which are closed chamber and similar to 302's, and I'm running a Comp XE262H camshaft. I'm hoping something like this would run as well as your buddy's 318.

F yeah, that works! I did the exact same thing 25 years ago. 318 short block with everything else 273-4. +45 cubes...almost 20%! Huge difference on the street. And all the A body manifolds look like that to clear the steering box, From 64 to whenever they widened the steering box mounts. 2bbl-4bbl 273-318 were all the same.