Trapspeed Vs. Horsepower - SRT Forums

mEasy27 · 05-18-2008, 03:29 AM

I know that trap speed is a pretty good indicater of where your car is horsepower wise. What is the Hp level for a 106 mph trapping car...

dodgezdad · 05-18-2008, 05:56 AM

Quote: Originally Posted by mEasy27

I know that trap speed is a pretty good indicater of where your car is horsepower wise. What is the Hp level for a 106 mph trapping car...

I had 260 hp and 295 torque and was trapping 86 and 87 in the 1/8 and 106 in the 1/4.

Turbolag87 · 05-18-2008, 11:35 AM

260 give or take a few hp

bluebeast · 05-18-2008, 02:00 PM

I agree with the guys above.

addictedtosin · 05-18-2008, 03:24 PM

yup about 260 with my car too when I was trapping 106

LeggoMySRT4 · 05-18-2008, 09:05 PM

TunerCalcs - Calculate Wheel Horsepower from 1/4 Trap Speed (mph)

stock 03-05 dodge srt4 curb weight is somewhere between 2870 to 2970 lbs

different sources on the internet will give different #'s on the measured curb weight

if you really want to know what your car weighs take it to a drag strip or race track that has a scale

mEasy27 · 05-18-2008, 11:53 PM

Quote: Originally Posted by dodgezdad

I had 260 hp and 295 torque and was trapping 86 and 87 in the 1/8 and 106 in the 1/4.

yeah when i trapped 106 my 1/8th was 87 also...

Quote: Originally Posted by LeggoMySRT4

TunerCalcs - Calculate Wheel Horsepower from 1/4 Trap Speed (mph)

stock 03-05 dodge srt4 curb weight is somewhere between 2870 to 2970 lbs

different sources on the internet will give different #'s on the measured curb weight

if you really want to know what your car weighs take it to a drag strip or race track that has a scale

According to this site. Im making 292.54 with a 3103 car(me in it) at 106.5mph. How accurate is this.

Pablo · 05-19-2008, 12:20 AM

It said I'm making 448WHP, I ran a 11.53@123 in a full weight car, anyone think that's acurate?

mEasy27 · 05-19-2008, 12:55 AM

Quote: Originally Posted by Pablo

It said I'm making 448WHP, I ran a 11.53@123 in a full weight car, anyone think that's acurate?

have u ever been dynoed. Its seems accurate.. I guess....

mEasy27 · 05-19-2008, 12:57 AM

I just checked to see how it would be if I were stock. It came out to 234.98 with a 99mph trap.

addictedtosin · 05-19-2008, 10:01 AM

according to the last 3 runs I made at the track 3 weeks ago its saying that I make 390 hp on 18.5psi of 50trim boost. As much as I would love to believe that I think its off by quite a bit. I would say I make more like 360hp. I think this calc is for rwd cars.

scottw03 · 05-19-2008, 01:22 PM

Quote: Originally Posted by addictedtosin

according to the last 3 runs I made at the track 3 weeks ago its saying that I make 390 hp on 18.5psi of 50trim boost. As much as I would love to believe that I think its off by quite a bit. I would say I make more like 360hp. I think this calc is for rwd cars.

Wouldn't that mean that you actually make more power than it is telling you since most RWD cars have a higher drivetrain loss than FWD cars?

addictedtosin · 05-19-2008, 02:13 PM

your right it would make more sense if it were Crank HP

boomboom · 05-19-2008, 05:26 PM

i supposedly only have 240hp and about 290ft/lb of torque (thats according to the guy that ran the car on the dyno... wouldn't let me run the car myself). I ran 89mph in the 1/8 but i ran a 9.00. so where does this leave the theory? (also take into factor my 60ft was horrible and could not catch traction... no track prep just concrete, and street tires)
also i raced a guy and he ran an 8.3 at 81 mph does this mean i have more power than him?
thats a no if you want the answer

addictedtosin · 05-19-2008, 05:31 PM

ets dont work very well. et is just a traction factor. Mph and car weight are the only fairly accurate way to tell..... sans a dyno