brodix bb3 ?????
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brodix bb3 ?????

  1. #1
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    Default brodix bb3 ?????

    will these heads work on a 454 mark lV its .30 over now stock stroke but i want to build 496 in the future and want to know if these heads will work for me as they happen to be priced right

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  3. #2
    Senior Member alkyexpress's Avatar
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    Quote Originally Posted by lowlow62 View Post
    will these heads work on a 454 mark lV its .30 over now stock stroke but i want to build 496 in the future and want to know if these heads will work for me as they happen to be priced right
    I used a set on a blown/alky motor turning 8300 rpm, there is a design flaw to the head( they moved the exhaust valve over which made the shrouding worse), depending on the rest of the combination (compression , cam , rpm ,intake , exhaust , etc ) would determine your results , What are they asking for them & are they complete ? .........E

  4. #3
    i'm back!! 1QuickCP's Avatar
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    I've done a few sets of -3's...needs a big bore (4.5+) and is trickey to port correctly. Not so good out of the box and they can be messed up pretty easy if the porting is not done right. They do however work quite well if ported and cammed right. At the time they were OK but much better stuff out there today, for a 454 personally i'd pass on them. Oh rocker geometry needs to be checked carefully due to altered valve spacing, and watch vp and where valve pocket is cut on piston ect....

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  6. #4
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    the guy wants 500 bucks bare for the pair

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