RePower Luhrs 31'

Discussion in 'Gas Engines' started by akboy, Dec 26, 2011.

  1. akboy
    Joined: Jan 2011
    Posts: 6
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    Location: Apollo beach, FL

    akboy Junior Member

    Its time to re power my boat. It has a pair of 1993 5.7 SB 260HP, one RH rotation, one LH rotation. Id like to put in more HP, but all the newer Vortec motors with roller cams, aren't available in RH rotation. I've seen 383 stroker marine long blocks available in RH or would these be too radical a swap? I have Borg Warner trannies, if I could find a reverse rotation transmission, I could have my pick of motors, but a RR transmission is no longer available in a
    71C-17 Velvet Drive. Which way to go?
     
  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    71C transmission can turn either way. You can set the pump for whichever rotation
     
  3. powerabout
    Joined: Nov 2007
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    Location: Melbourne/Singapore/Italy

    powerabout Senior Member

    the question is how to get right hand engine CW to repower otherwise the boat will end up with both props rotating the same way
     
  4. powerabout
    Joined: Nov 2007
    Posts: 2,901
    Likes: 61, Points: 48, Legacy Rep: 719
    Location: Melbourne/Singapore/Italy

    powerabout Senior Member

    re sale wise
    get 2 new trannies that can do either output so you can them have late model engines
     
  5. akboy
    Joined: Jan 2011
    Posts: 6
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    Location: Apollo beach, FL

    akboy Junior Member

    Reverse Rotation Transmision

    My 71cs are turning opposite rotation now, i need a transmission to turn opposite the engine.
     
  6. gonzo
    Joined: Aug 2002
    Posts: 13,536
    Likes: 368, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Then you can get either a Twin Disc or a Liberty transmission.
     

  7. akboy
    Joined: Jan 2011
    Posts: 6
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Apollo beach, FL

    akboy Junior Member

    transmissions

    Thanks, I.ll check those out.
     
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