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Horsepower numbers

This is a discussion on Horsepower numbers within the General Help forums, part of the LSx Technical Help Section category; ok. I weighed my car today. With me in it the car weighed 3860lbs. I weigh 200 so the car ...

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    Member tg580's Avatar
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    Horsepower numbers

    ok. I weighed my car today. With me in it the car weighed 3860lbs. I weigh 200 so the car is 3660. With my buddy in it with me we weighed 4020 lbs. My best run on a G-Tech was 12.25 and when you put that into a horsepower calculator I saw any where from 430 to 450. I dynoed at 398. What's up with that?
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    Moderator 35th-ANV-SS's Avatar
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    The calculator's aren't very accurate. I know however that the G-tech meters are extremely accurate. I've seen them within .1 of actual track times.

    I wouldn't be overly concerned about the numbers. They are just that, numbers. Take it to the track and see what you run and report back!

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    I agree. grab some gatorade and take it to the track and have fun experimenting with your car. race without your buddy in car. then race with buddy in car. race without buddy, spare tire, jack, and other stuff in car. if u have extra funds, race with street tires, then race with drag radials, then with slicks.

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    Member tg580's Avatar
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    The car is a convertible. I can't race it without a roll bar. At least not at my local track.

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    Senior Member Z28Thunder's Avatar
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    Go to a dyno find out the numbers for real?

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    Member tg580's Avatar
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    Quote Originally Posted by Z28Thunder View Post
    Go to a dyno find out the numbers for real?
    I said that I dynoed at 398.
    99 convertible WS6, 224/224 .581 lift 112 LSA, 398hp/380TQ, Patriot stage 2 heads, LS6 intake, Ported throttle body, Pacesetter long tube headers and offroad Y pipe, Magnaflow muffler, SLP Underdrive pulley, Melling high volume oil pump, 3200 stall, 3.73 gears, Mickey Thompson ET Street DR radial

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    Senior Member Z28Thunder's Avatar
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    Quote Originally Posted by tg580 View Post
    I said that I dynoed at 398.
    Yes you did... Like stated the calc's suck...

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    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
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    Quote Originally Posted by tg580 View Post
    ok. I weighed my car today. With me in it the car weighed 3860lbs. I weigh 200 so the car is 3660. With my buddy in it with me we weighed 4020 lbs. My best run on a G-Tech was 12.25 and when you put that into a horsepower calculator I saw any where from 430 to 450. I dynoed at 398. What's up with that?
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    430-450 FWHP? or RWHP cause if you dynoed 398 then your FWHP woul dbe at about 450 with drivetrain loss

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    That guy thearborbarber's Avatar
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    What is the trap speed from the g-tech?

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  11. #11
    Member tg580's Avatar
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    trap speed was 115.8

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    Make real real sure Johns00Z28's Avatar
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    Quote Originally Posted by tg580 View Post
    The car is a convertible. I can't race it without a roll bar. At least not at my local track.
    You can make one pass before they throw you out.

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