How much horsepower ?

trmnatr · 03-14-2009, 04:46 PM

How much horsepower to take a 3600-3700 race weight car the following times with a TH400 trans ?

11.50
10.90
10.50
10.00

Say a Camaro, Chevelle, Mustang etc at that weight
Figure small blocks that dont have a ton of torque

For you stick guys out there, how much hp to go that fast with a 4 speed at that weight ?

Jim Cimarolli · 03-14-2009, 10:46 PM

Need about 450 hp to run 11.50 and about 750 hp to run 10 flat with an automatic in a 3700 lb. car.

henrys57wagon · 03-15-2009, 07:53 AM

I have the calculator somewhere in this box, but for now here is a link that has a lot of calculation formulas, hope they help someone, Henry.
http://www.csgnetwork.com/automotiveconverters.html

gmonde · 03-15-2009, 08:57 AM

Quote:

Originally Posted by Jim Cimarolli

Need about 450 hp to run 11.50 and about 750 hp to run 10 flat with an automatic in a 3700 lb. car.

thats track horse power(rear wheel) gmonde

trmnatr · 03-16-2009, 09:50 PM

How much HP would a 3650 chevelle have at the engine as a guess with the following ET's and driveline

3650 chevelle race weight
327 small block

Spun hard so we leave from an idle and spins hard from an idle just not as bad,, anyways here is some ET info

60' 1.765 (spun through low gear)
1/8 7.49 @94.93mph
1/4 11.645 @118.98mph but lifted before lights

Next best pass which was a little too wild (which we think was the track)
60' 1.62 (leaving 3600rpm off t-brake and 35-40' out went to the left out of groove and had to be pulled in)
1/4 11.70 @117.56mph (on and off throttle 3 times, last was lifted car length or so before lights)

I need to figure out the suspension and the walking in the groove,,,, our other car walked in the groove too but with a 32x14.5W it felt fine. The Chevelle on 8.6" tread is not fun

Im looking at maybe putting a radial on it,, How will a radial hook leaving off the transbrake ? Any tricks to radials ?

I see alot of race cars going to Mickey Thompson ET Street Radials on 100% drag cars, i watched a mustand go 1.28 60' on a pair of 275/60 15's

Here is a video of the 11.645 @118.98mph pass
http://s510.photobucket.com/albums/s...t=MVI_0362.flv

Thoughts ?

Jeff Lee · 03-17-2009, 03:02 PM

To start with, you need a new camera man!

trmnatr · 03-17-2009, 04:09 PM

Quote:

Originally Posted by Jeff Lee

To start with, you need a new camera man!

I know

03-14-2009, 04:46 PM	#1
trmnatr Member Join Date: Oct 2008 Posts: 168 Likes: 0 Liked 1 Time in 1 Post	How much horsepower ? How much horsepower to take a 3600-3700 race weight car the following times with a TH400 trans ? 11.50 10.90 10.50 10.00 Say a Camaro, Chevelle, Mustang etc at that weight Figure small blocks that dont have a ton of torque For you stick guys out there, how much hp to go that fast with a 4 speed at that weight ?

03-14-2009, 10:46 PM	#2
Jim Cimarolli Senior Member Join Date: Mar 2002 Location: Sulphur Springs Texas Posts: 741 Likes: 144 Liked 166 Times in 46 Posts	Re: How much horsepower ? Need about 450 hp to run 11.50 and about 750 hp to run 10 flat with an automatic in a 3700 lb. car.

03-15-2009, 07:53 AM	#3
henrys57wagon Member Join Date: Jan 2009 Location: Carleton Place, On. Canada Posts: 107 Likes: 5 Liked 0 Times in 0 Posts	Re: How much horsepower ? I have the calculator somewhere in this box, but for now here is a link that has a lot of calculation formulas, hope they help someone, Henry. http://www.csgnetwork.com/automotiveconverters.html __________________ old 1608 stock racer

03-16-2009, 09:50 PM	#5
trmnatr Member Join Date: Oct 2008 Posts: 168 Likes: 0 Liked 1 Time in 1 Post	Re: How much horsepower ? How much HP would a 3650 chevelle have at the engine as a guess with the following ET's and driveline 3650 chevelle race weight 327 small block Spun hard so we leave from an idle and spins hard from an idle just not as bad,, anyways here is some ET info 60' 1.765 (spun through low gear) 1/8 7.49 @94.93mph 1/4 11.645 @118.98mph but lifted before lights Next best pass which was a little too wild (which we think was the track) 60' 1.62 (leaving 3600rpm off t-brake and 35-40' out went to the left out of groove and had to be pulled in) 1/4 11.70 @117.56mph (on and off throttle 3 times, last was lifted car length or so before lights) I need to figure out the suspension and the walking in the groove,,,, our other car walked in the groove too but with a 32x14.5W it felt fine. The Chevelle on 8.6" tread is not fun Im looking at maybe putting a radial on it,, How will a radial hook leaving off the transbrake ? Any tricks to radials ? I see alot of race cars going to Mickey Thompson ET Street Radials on 100% drag cars, i watched a mustand go 1.28 60' on a pair of 275/60 15's Here is a video of the 11.645 @118.98mph pass http://s510.photobucket.com/albums/s...t=MVI_0362.flv Thoughts ?

03-17-2009, 03:02 PM	#6
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: How much horsepower ? To start with, you need a new camera man! __________________ Jeff Lee 7494 D/S '70 AMX