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which heads??
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[QUOTE]Originally posted by Mr.10psi: [QB] [QUOTE]Originally posted by Tom Renzo: [qb] Well the best flowing heads are AFR 165 if memory serves me for small fords. And as far as PV clearance it is a must to check it. My experience with small fords is anything over 480-500 total lift is getting real critical. naturally there are several variables like deck height head milling cams size of the valves and cam overall specks degreeing and overlap and duration. But with a cam that is at or below 500 and AFR heads on 10 Lbs of boost it will be a stretch to obtain 400 WHP. Other than that make sure you check PV clearance and keep the lobe centers at or around 110-112* I would go for a cam of at least 560-580L and make sure you check the PV CLEARANCE especially on that engine,VJ heads in my view are better for more cubes and i would not hesitate one minute to use them and cut the pistons. But AFR has some other heads that will do the job nicely. But you need more lift than 500. Good luck and use a bigger cam @ 500 you are limited to @ or around 400 MAX [/qb][/QUOTE]Guess i havent made it clear enough lol, but piston to valve clearance has nothing to do with valve lift/total valve or any lift of that matter. Lift doesnt do anything to clearance. If you think so, then you must not know valve events. Duration overlap lsa are the main ingredients, then milling and decking but certainly not lift whatsoever. [/QB][/QUOTE]
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