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  • Mikeski
    1,000 Post Club Member
    • Jul 2003
    • 2908

    • San Francisco, CA

    • Current 2005 SV 211, due for upgrade! GS22 or GS24 perhaps? Previous

    #16
    Originally posted by TRBenj View Post
    FYI, I would not expect the addition of the 6.0L to improve the holeshot all by itself. I would say that the 409 and 343 come out of the hole very comparably when propped the same. Jody hinted recently that the EX is stronger out of the hole, which would not be a huge surprise to me either.
    This is probably very true for slalom boats, and something I would have said before spending a significant amount of time driving heavily loaded wakeboard boats.

    It is a very different loading curve with a heavily loaded boat using a 14-15" pitched prop behind a 1.5:1 gear reduction V-drive. On these boats you floor it and wait, sometimes the wait is well over 30 seconds which seems like eternity. I have also been driving a boat that would simply not plane off until some of the crew moved into the bow. In these situations the motor reaches near peak torque as it gets up over 3000 rpms or so. This allows the newer LS series motors like the ZR409 or ZR450 to get into the torque curve where there is a difference and therefore my experience is that they get on plane quicker. As you also mention the LS motors also spin higher rpms so the loss of top speed with flatter props is less.
    Last edited by Mikeski; 07-17-2012, 12:22 AM.

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