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  1. 04-08-2012, 05:29 PM #1
    55excl
    55excl is offline
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    How much HP is lost through the lower unit?

    If you motor crankshaft HP is 300 how much is your prop shaft HP?
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  2. BassinBarrister
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    #2 04-08-2012, 07:38 PM
    I believe it is about 10% less. Had a 454 big block on a Cobalt and the crankshaft HP was 330 and the propshaft HP was 300.
    BassinBarrister
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