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  1. #1
    Join Date
    Aug 2006

    New, lightweight LS smallblock offering

    A 415 ci marine engine with VVT from Mast Motorsports. I don't know whether they are partnering with Raylar on this one. 536 HP @ 5800 RPM; 523 TQ @ 4800 RPM.

  2. #2
    Registered User
    My Boats:
    1990 28 Apache SOLD!, 1990 16 Wahoo DC, 1973 40 Kingscraft
    Join Date
    Jan 2007
    Mansfield, TX
    What does the low end torque curve look like. Say at around 3000-4000 rpm? Cost? Time to rebuild?

  3. #3
    My Boats:
    Donzi 35zr, Scarab SCS
    Join Date
    Sep 2006
    Toronto, ON
    Looks like the Raylar motor. Cool stuff.

  4. #4
    Platinum Member Platinum Member 4mulafastech's Avatar
    My Boats:
    2006 Formula 292 FasTech / 2007 Ranger Reata 190VS
    Join Date
    Apr 2005
    Washington, MO
    Quote Originally Posted by TexomaPowerboater View Post
    What does the low end torque curve look like. Say at around 3000-4000 rpm?
    From the website...
    Attached Images Attached Images

  5. #5
    Join Date
    Jan 2004
    San Diego, California

    Wink A real marine performance LS engine?

    Our LSM550 engine is now 430cubic inch and it was dyno tested with all marine equipment including raw water pumps, closed cooling, marine headers in place versus an automotive engine configuration on the dyno. I know that if this 415 cu. inch engine here is fully marine configured its horsepower and torque values will be more like 500HP and 490ft/lbs of torque. Not bad, but its still not ready in this state to drop in a boat so don't think you are going to see a completely equipped 500HP marine LS engine in the $15-18K range. This engine is also equipped with our forged crankshafts, special forged pistons and other special components to produce this kind of durability. If it could be done with stock GM components , ours would already be priced in that range. Mast is working with us to expand our marine LS offerings and were hard at work building LSM550's as we speak and some lesser powered versions soon to be released.
    Boat speed costs money! How fast do you want to Go!

    Best Regards,
    Ray @ Raylar
    Last edited by Raylar; 06-28-2008 at 02:55 PM. Reason: spelling

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