2V vs 4V Cleveland heads
One good comparison for this is the Big Block Chevy oval port vs square port heads. Oval port heads are better suited for street use, while the square ports come into their own at wide-open-throttle use above 4500rpm.
I went with the low buck approach with my 396 BBC in my Camaro. It had oval port heads, but I installed the bigger exhaust valves of the square port heads. Still hydraulic cammed, but one of the nastiest I could find back then. This motor had nice street driving qualities, but once I back-halfed the car, this same motor was propelling me to a best of
[email protected] That translates to somewhere between 425 and 460 horsepower! Not bad for an oval port 396!
What I'm trying to say is go ahead with the 2V heads on your Cleveland. They can be made to run sweet for the street! Plenty of go-power under the skinny pedal!
OK, carb size. VS = Vacuum secondaries. My stock 351C-4V in BetaCat actually goes better with the 600cfm vac sec carb I have. AlphaCat has a much modified 351C-4V engine. It likes its 780 vac sec carb, although it actually ran better with a 735 vac sec from a 428CJ, but my buddy wouldn't let that carb go.