That cam's a perfect candidate for Rhoads lifters. I had several cams cut with 234-244 @.050, 110/113* centers with the intake at 108 and .462-.491 lift. I built a street 412 with that cam and Rhoads that would idle at 800 rpm and ran 12.80's at 109 mph in a '64 GTO.
If you were running unleaded before, you should be able to run the Rhoads and run at least 8-10 initial without issues. Advancing the cam 2* degrees would help bottom end and idle as well, but might limit the initial timing you could run. Remember, you might not be able to hear detonation. Pontiacs are less prone to it than most engines, but they can have problems with it. You can jet the carb a little rich to help reduce the tendency to detonate. I ran an 800 Spread-Bore, Double-Pumper Holley that I'd done quite a bit of work to. Response with 3.55 gears was more than impressive. You would have thought that it had vacuum secondaries rather than mechanical.
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Rich
The real democratic American idea is, not that every man shall be on a level with every other man, but that every man shall have liberty to be what God made him, without hindrance.
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Last edited by Stuckinda60s; 10-14-2017 at 12:33 PM.
Reason: Added carb
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