Front to rear weight ratio ???
06-24-2008, 08:21 AM
#1
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Front to rear weight ratio ??? what do you 8-9 sec drag radial cars use for your front to rear weight ratio's to get the car to hook good. I know there is a rule of thumb 51 front 49 rear. Is that correct ? Thanks for any help.
06-24-2008, 11:10 AM
#2
The more weight on the rear tires the better it'll hook, but with the high power of a 8-9 sec car not enough front weight will put the car on the bumper. Considering the classes I see require a 3,400 weight you can shift a lot of weight around, up to 250 pounds of ballast in a 25.5 car, which doesn't count a second battery if you need extra weight.
There is no perfect ratio, a short wheel base mustang will be on the bumper with a 51/49 ratio, while a long wheel base 55 chevy will probably be ok with it. It's something you have to tune and see where the car works, a lot of the time 20-40 pounds can mean the difference from a perfect pro stock like launch to standing the car up.
There is no perfect ratio, a short wheel base mustang will be on the bumper with a 51/49 ratio, while a long wheel base 55 chevy will probably be ok with it. It's something you have to tune and see where the car works, a lot of the time 20-40 pounds can mean the difference from a perfect pro stock like launch to standing the car up.
06-24-2008, 04:16 PM
#4
You can setup a 4th gen to hook with stock weight distribution, I've seen cars that are worse than stock weight distribution, a big turbo up front with the motor in stock location and the rear seats removed has to be worse than stock weight distribution and I've seen passes made in the high 7's low 8's on drag radials on 275 60 15's.
I am sure they add ballast to make weight and improve the weight distribution though.
Ask Dave Bowman what his weight distribution is without ballast. He has a fast 4th gen on a small drag radial and has a really stock appearing car, interior panels and stock dash and stuff. His SN is outlaw something or contact him at http://www.bowmanmotorsports.com/
You can pm MADMAN he does a lot of 4th gens as well he should a lot about that since he scales cars. Never hurts to ask.
I am sure they add ballast to make weight and improve the weight distribution though.
Ask Dave Bowman what his weight distribution is without ballast. He has a fast 4th gen on a small drag radial and has a really stock appearing car, interior panels and stock dash and stuff. His SN is outlaw something or contact him at http://www.bowmanmotorsports.com/
You can pm MADMAN he does a lot of 4th gens as well he should a lot about that since he scales cars. Never hurts to ask.
06-24-2008, 07:27 PM
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I have a 2002 SS that Im putting a 408 with ETP 245 heads and a 400 progressive. On the street it will have a 6 speed and for some money races and the track I already have a Rossler powerglide. I just ordered my new M9 moser rear and torque arm. I already have the aluminum center section. I really dont want to put a slick on the car so Im running 325 M/t radials. I mini tubbed the car over the weekend and I am putting the interior back in soon. I already put in a tubular kmember and QA1 R shocks with 325 springs and QA1 shocks in the back. I plan on putting in chromloy subframes and moly cage.
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06-25-2008, 06:10 AM
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I had a twin turbo car before and Im not lookin to go that direction again. I want simple and easy to work on/ tune/ space/ weight/ cost.
06-25-2008, 10:15 AM
#12
I just think it is hard to be competitive in a class with nitrous without having to lean on it to keep up with the FI cars that are making so much power. Spraying a 400 shot tuned 100% to perfection is still a lot harder on a motor than adding in boost.
Of course it's your car and your build and I wish you the best of luck either way
Of course it's your car and your build and I wish you the best of luck either way
06-25-2008, 01:03 PM
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I am not in any class and only go to the track as a proving ground. I usually street race and just build cars for fun. I am no pro racer by any means.
