Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - I have stock Gen IV 454 & 781 Heads, Compression ????
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Old 12-02-2011, 04:32 AM
winginit winginit is offline
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This will help with the math.

http://www.wallaceracing.com/Calculators.htm

781's work great on a 454-468 but machine work and parts add up quick I have a bunch in the set I have.A small port works great up to a 496 A 540 or larger I would want rectangle port best out of the box head would be AFR 305's IMO

Last edited by winginit; 12-02-2011 at 04:42 AM.
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