Rear Wheel Horsepower Calculator

Dino Dino Bambino

15 Year Member

Jun 13, 2007

1,672

89

79

Cyprus

Jul 23, 2013

#1

• Jul 23, 2013

• #1

Those of you who've run a 1/4 mile and have the vehicle weight with driver can have a bit of fun trying this one out. If possible, compare the result to an actual dyno run:

http://www.angelfire.com/my/fan/WHPCalculator.htm

Mine comes out at 266.7rwhp with overdrive switched off but if I plug in my best 1/4 mile with overdrive switched on (102.87mph), I get 248.5rwhp which is close to my actual dyno run of 243.5rwhp.

If I plug in the numbers (3620lb & 94.4mph) for my 4.6L Stroker Jeep Cherokee I get 202.1rwhp and my actual dyno run was 201.7rwhp!!

 

5.0 Ford Guy

Founding Member

Nov 29, 1999

423

35

39

Brownsburg, Indiana

Jul 23, 2013

#2

• Jul 23, 2013

• #2

That's pretty cool. Now I just need to drive my fat @$$ to a drag strip and make a couple runs.

Actually it is pretty sad that I haven't been to the strip yet. Here is an aerial photo of my house just at the end of IRP.

 

90lxwhite

I'm kind of a She-Man

5 Year Member

Aug 25, 2011

3,310

374

134

Between the Red and Rio

Jul 23, 2013

#3

• Jul 23, 2013

• #3

I'm too slow for the track

 

Dino Dino Bambino

15 Year Member

Jun 13, 2007

1,672

89

79

Cyprus

Jul 24, 2013

#4

• Jul 24, 2013

• #4

Ok, so we've only had fatass and slowass post replies so far.

 

90lxwhite

I'm kind of a She-Man

5 Year Member

Aug 25, 2011

3,310

374

134

Between the Red and Rio

Jul 24, 2013

#5

• Jul 24, 2013

• #5

You go it

 

Black Stampede

Founding Member

Sep 3, 2002

1,811

2

39

Grand Rapids, MI

Jul 25, 2013

#6

• Jul 25, 2013

• #6

At least we know how to find you

 

5.0 Ford Guy

Founding Member

Nov 29, 1999

423

35

39

Brownsburg, Indiana

Jul 25, 2013

#7

• Jul 25, 2013

• #7

Yeah, drive down the drag strip and keep your foot down. When your car comes to a stop from smashing into a storage building holler and I'll come pull you out

It's a lot of fun when the Nationals are here. I can hear the car's run down the track. Then a few seconds later it is on TV. So I can hear what happened before I watch it.

 

JJ95GTID

Active Member

Sep 22, 2003

1,141

4

49

Phoenix, AZ

Jul 26, 2013

#8

• Jul 26, 2013

• #8

Last track I went to was 2700' elevation (Firebird in Boise, ID) and my best 1/4 mile run (13.81sec) results in a calculated 262rwhp assuming 3500lbs race weight.
That was running with no supercharger, smaller injectors, smaller MAF sensor housing, etc.

Haven't been to the track with my current supercharged setup dyno'd at 380rwph.
Both tracks in Phoenix are closed
Looking forward to racing at Wild Horse Motorsports Park with 1082' elevation when they open.

Note to self: buy new helmet and new drag radials