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Thread: Another Cyl head question

  1. #1
    Partycattin
    What heads come on a 496 mag? (049,990, etc).
    Are they any good? Would they work on a 7.4?

  2. #2
    SmokinLowriderSS
    Pull a valve cover off and locate the casting number, then a place like Mortec.com may have some specs for ya.

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