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  1. 7

    Need help with prop

    I have a 1979 delta bow rider with a 305 inboard and 898 mercruiser and trying to figure out right prop for it. Currently the boat has a 14.5" 4 blade 16 pitch prob. Seems to run ok but top speed is only around 30 and 35 if I trim up on smooth water. I'm running around 4000 to 4500 rpm. Dont...
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