[Formulajones]

Originally Posted by Skippy597

This is a topic that always interests me. Don't get wrong as most of you on here are probably smarter than I, but I think Pontiac guys have a some warped perception of head sizing. Even when talking to powell customs he said they speedmaster rounds ports 215cc runner are too small for a 460 stroker.

Lots of SBC guys run 200 cc runners on 383s that breaks down to 1.9 cubic inches per 1 cc of runner size

Yet you look at a 455 with 215 runners and that equals 2.1 ci per runner cc

You never here about SBC or sbf guys talking about runners being too large. But Pontiac guys tend to obsess over it.

Just interesting to me.

Powell would be correct.
Hell I put 195's on a 327 I recently did and it made 447 ft lbs. It made over 400 ft lbs for the entire pull from 3000 to 7200. It has a really nice flat torque curve. Throttle response is instantaneous, and it drives fantastic. That's a peanut motor compared to what we are talking about here.

Are you guys trying to tell me a 455 Pontiac with a 4.210 crank is incapable of that if we put 200cc heads on it?? If that's the case it doesn't say much for Pontiacs.