Horsepower Calculator
Thread Starter
Melting Slicks
Joined: Sep 2000
Posts: 2,710
Likes: 1
From: Green Bay WI
Horsepower Calculator
Hi Guys - long time no talk! 
Does anyone know where I can find a reputable horsepower calculator? I'd prefer one that takes E.T., Vehicle weight, and speed in its calculations. Thanks much!
Does anyone know where I can find a reputable horsepower calculator? I'd prefer one that takes E.T., Vehicle weight, and speed in its calculations. Thanks much!
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Horsepower Calculator (cprgmr)
Take the equations for HP from trap speed and trap speed to best ET from my site into a spread sheet. The HP is BHP at the crank. A recent comparison between three dyno pulls and prior trap speeds showed about a 17% drive train loss.
While you're there, include the corrections for temp & baro in your spread sheet, to normalize your run data for weather conditions. RH correction has not been included but it is relatively minor compared to the other two weather parameters.
This package gives you a convenient way to see what gain come from a mod and you can keep a nice progress log on your PC.
While you're there, include the corrections for temp & baro in your spread sheet, to normalize your run data for weather conditions. RH correction has not been included but it is relatively minor compared to the other two weather parameters.
This package gives you a convenient way to see what gain come from a mod and you can keep a nice progress log on your PC.
Drifting
Joined: Aug 2001
Posts: 1,500
Likes: 0
From: Holliston MA
Cruise-In VII Veteran
Re: Horsepower Calculator (DADDY D)
Smokemup's numbers have always been within 5 hp after I've taken the car to the track then next day to the dyno. The ET calculators aren't accurate, too many variables. Use the MPH one.
Burning Brakes
Joined: Mar 2001
Posts: 1,200
Likes: 0
Re: Horsepower Calculator (SloRvette)
the idaho corvette page has a lot of cool links ... this is one for Hp calc http://www.angelfire.com/fl/procrast...n/quarter.html
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Horsepower Calculator (Rich_01659)
I just plugged my latest numbers in (104.8mph & 3370lbs) and it gave me 359hp for 31% loss, oops, not likely.
A recent dyno pull gave me 247hp at the rear wheels, so I think the equations I'm using are closer with 303hp at the crank and about 17% loss.
A recent dyno pull gave me 247hp at the rear wheels, so I think the equations I'm using are closer with 303hp at the crank and about 17% loss.
