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Thread: Merc 454 rebuild Newbie

  1. #1
    Randy De Pirate
    Looking for some idea to increase my engine from 330 hp to 400hp.
    I mostly wakeboard on my 2550sx chaparral boat
    I have mpi hirel fuel injection.
    I have been looking at aluminum heads to help reduced the weight which is a slight issue. Question Oval or rectangle ports? I have both intake manifolds.
    I like to put roller rockers and mild cam.
    I have stock headers atm but plan to upgrade to lightning exhuast system which will give me more HP and reduce the weight by 70LBs

  2. #2
    Squirtin Thunder
    Looking for some idea to increase my engine from 330 hp to 400hp.
    I mostly wakeboard on my 2550sx chaparral boat
    I have mpi hirel fuel injection.
    I have been looking at aluminum heads to help reduced the weight which is a slight issue. Question Oval or rectangle ports? I have both intake manifolds.
    I like to put roller rockers and mild cam.
    I have stock headers atm but plan to upgrade to lightning exhuast system which will give me more HP and reduce the weight by 70LBs
    Call me
    Jim
    928-704-1158

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