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Thread: 5.7 mercruiser upgrades???

  1. #11
    tbanzer
    If your numbers are correct you are going to need about 100hp to gain 8mph. Probably about $2000 in parts to gain 8mph, thats providing your labor is free. Heads, Camshaft, thru hull exhuast and prop swap.

  2. #12
    spoolinawdtsi
    still runnin cast intake with quad 4 b.
    Thanks guys 4 all the info!!!!!

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