Number Cruncher Needed

Discussion in 'Mopar Racers Forum' started by 70DusterBob, Dec 6, 2018.

  1. 70DusterBob

    70DusterBob Well-Known Member

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    I have heard there is about a 20% drop in transmission of power from engine to tires. My engine dyno'ed at 300hp at 3100 rpm and 470hp at 5300 rpm.

    What would be a good estimate, and I know it won't be exact, lots of factors, but what would the hp be at the tires in first and second at 3100 rpm then at 5300 rpm??

    Just wondering.

    Torque sits at 517 ft lbs at 3200 rpm and around 425 ft lbs at 5300 rpm

    Thx
     
  2. RAT ROD AL

    RAT ROD AL FABO Gold Member FABO Gold Member

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    240 and 376 if what you say is true. The 20%
     
    • Agree Agree x 1
    • 70DusterBob

      70DusterBob Well-Known Member

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      20% is a very rough estimate, but I was wondering what the gear ratios are in 1st and 2nd. The 240 and 376 would be in 3rd. Someone told me the gear ratios before but I can't for the life of me remember.
       
    • charles mill

      charles mill Wildman68 FABO Gold Member

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      yes u got that the man asking gears and wheel tire size. from where u-at smaller more power tire larger more speed on road.