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Thread: World Pro Heads Oval Vs Rectangle

  1. #1
    ghittner
    Just finished my motor, a 454 stretched to 496, with a B&M 420 Megablower, dual 750's on top and all the good stuff inside. I'm running the World Merlin steel ovals because that's what I have and I've spent too much already. Would the rectangulars make more power at 12pds of boost or under? If so, how much? No dyno, I'm guessing approx 800-850 HP w/no intercooler. Am I close here?

  2. #2
    Senior Member
    Join Date
    Feb 2009
    Posts
    678
    Just finished my motor, a 454 stretched to 496, with a B&M 420 Megablower, dual 750's on top and all the good stuff inside. I'm running the World Pro steel ovals because that's what I have and I've spent too much already. Would the rectangulars make more power at 12pds of boost or under? If so, how much? No dyno, I'm guessing approx 800-850 HP w/no intercooler. Am I close here?
    Greg...ck ur PM's
    Ron (fastrat)

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