hy guys i want to know what spring rate can i use in the front of my car, car weight 2400lb and is for drag only

 

Depends on your balance of the car....

Have you corner scaled the car yet?

 

that makes no sense at all

spring rates have nothing to do with the corner weights of a car -- you don't pick your spring rates based on the how you want the car corner weighted - the car can be corner weighted how you want regardless of the spring rates

spring rates are based on the load they need to carry, the dampening they are used in conjunction with, and i am sure to some extent the stiffness you want in the front or rear of the car

i am not expert on this stuff but i do have quite a bit of first hand experience and corner balancing and selecting spring rates are completely different jobs

EDIT:
here is some geek information i just found -- http://performance-suspension.eibach...sion_worksheet

 

You chose spring rates based on weight and how you want the chassis to react during transfer. Hense why I asked if the car was scaled.... I wanted to know where the weight was.

 

only i need a good start point,thanks for your replys good knolage

 

I totally agree. If you have no way of pre-loading the spring (dual adjustable) the weight its carrying is very important.

I will say that you want them as stiff as possible but still have the spring support the car. Our front springs are 1000lbs/in cranked to about 1/2" of travel.

 

So your 1000lb springs have so much preload that they will coil bind after a 1/2" of front suspension travel?

 

we run 250lb springs. food for thought.

 

They have a lot of weight in the front of that car

 

I have 500's in the front of my outlaw car w/ Strange double adjustable suspension. To answer the question....

There are two methods of doing this.... IMO
You can either keep it stiff by having the spring do work or you can have a light spring and make the shock to the work. Shocks are more tunable than springs so it makes sense to have the shock to the work.

 

Assuming that you have some good shocks. Otherwise, most people just run the stiff springs and casual shocks. If you are building an outlaw car, than shock adjustability is the way to go as you stated.

 

No, its not 1/2"from coil bind. The spring is no where near bind. If you jack the car up and then let it back down the car only drops 1/2" once on the ground. We have about 1900lbs on the front tires, so I'd guess I have the springs at about 1500-2000lbs/in

 

I agree with valving. If you cant get the result from valving, running stiffer spring rates is not the correct way of doing it. I think we've reached the point of custom valving many years ago. Something to think about I guess. Spring rate is not the answer. Valving is.

 

Ok I gotcha, thanks for clearing that up!

 

thanks for all your replys,i have a vw and is hard to find a good shock for new
vws so this is the reason why im asking about springs,so maybe a way to go is check the weight in the front of the car and put a spring rate close to that