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Engine hp vs rwhp / torque?

This is a discussion on Engine hp vs rwhp / torque? within the General Help forums, part of the LSx Technical Help Section category; Engine hp vs rwhp / torque? Okay, so I know that there is a loss in hp going from the ...

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    Member cobrahunter's Avatar
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    Engine hp vs rwhp / torque?

    Engine hp vs rwhp / torque?


    Okay, so I know that there is a loss in hp going from the engine to the wheels. But what is the generally accepted loss in percentage.

    And also, would there be a similar loss in percentage when talking about torque (always wondered about this but have never asked).

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    old timer blue02Z's Avatar
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    15-20%

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    We'll be back... GatorSS's Avatar
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    For F-bodies, approximately 15% for auto trans and 12% for manual trans.

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    Member cobrahunter's Avatar
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    Okay...
    so if the dyno said my car was putting out 375 lb/tq, that's a real 375 lb/tq?

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    Member Bouvers's Avatar
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    I've always assumed that dyno's give you your to the wheels hp/torque but I may be wrong.

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    Senior Member greatwhiteZ28's Avatar
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    dyno #s are nice but what it runs on the track really matters. from what some one said on this site " its just basically bragging rights"

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    Retired NOT tired SteveC's Avatar
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    Quote Originally Posted by cobrahunter View Post
    Okay...
    so if the dyno said my car was putting out 375 lb/tq, that's a real 375 lb/tq?
    It depends, my 2001 Z28 A4 stock motor with 3.73's and Y3000 converter had a high RWTQ rating of 365, HOWEVER that was the torque spike between 1800 and 2500 RPM, my actual RWTQ was 325 @ 5400 RPM, what you want to read is the Torque curve after the spike.

    SteveC

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    Member cobrahunter's Avatar
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    I C.

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