Originally Posted by TYSON3660

We have a vega wagon it weights about 2300lbs. It has coil overs on the back. What rate of a spring do we need? I have been looking around and from what i can find if the rear end weight is less than 1050lbs we need to use 85lbs springs. but i see some springs that range from 4 inches to 14 inches. I dont no what kind of coil overs they r but will get more info as soon as i can. the motor is a 355 sbc roller can 650 lift [email protected] gears...stall is 5000...rear tire 32.14.15 .desk top dyno was about 515hp.Dont no if that helps.