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Thread: HP loss...

  1. #1
    Senior Member RACING JUNKIE BEAST477's Avatar
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    HP loss...

    What is the percentage of horsepower loss through drivetrain? Is it 10 or 15% I've seen it posted some where before just can't remember. My setup is a 540BBC, turbo 400, Dana 60 4.56 gears, 16.5x33 tires. Just trying to get an idea what it's making for power. Thanks guys.
    BEAST477






    Only a rich man can afford to use cheap parts.

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  2. #2
    Senior Member RACING JUNKIE BEAST477's Avatar
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    I reworded it maybe it makes more sense now.
    BEAST477






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  3. #3
    Senior Member DYNO OPERATOR
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    A buddy of mine ran his Chevelle on a chassis dyno when he bought a RM 522, the same one I have now. It dyno'd a 839hp corrected from RM. On the chassis dyno, with 4.88's, pg, and 14x32's, the best was 620hp corrected at the wheels. I'm sure, as with engine dyno's, those number can vary a bunch depending on the operator.....we were both a little disappointed...... until we went to the track!
    Johnny

  4. #4
    Senior Member RACING JUNKIE
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    Re: HP loss...

    Quote Originally Posted by BEAST477
    What is the percentage of horsepower loss through drivetrain? Is it 10 or 15% I've seen it posted some where before just can't remember. My setup is a 540BBC, turbo 400, Dana 60 4.56 gears, 16.5x33 tires. Just trying to get an idea what it's making for power. Thanks guys.
    There is come good calculators on the www for figure this out

    I use wallace racing ones, do a search and type the #'s in
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  5. #5
    Senior Member MASTER BUILDER
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    I 've heard anything from 15 - 25%. I reckon it depends on the dyno operator too! He's usually the one tuning the car and if he can't get more power out of it.... well ya know ya lose 50% thru the drive train...lol!
    It Ain't Over Til Its NOVA - 634ci of S*#t Your Pants!


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