Quote:
Originally Posted by Dave Noll
Are you having springs made Bill ? I need to change mine as well but all I've come up with are a pair for a Maverick off of rockauto.com.
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The compressed standard ride height is aprox 12" . I am not saying this is what to use but moroso drag springs for the ford are 242 rate designed for 1610-1690 front end weight.
If you scale the car you can select springs from many places, here is an example
http://www.racingsprings.com/Sportsm...ngs/Store/1417
Typical drag race stock suspension front springs are longer with the correct rate to get the ride height set back to standard, as in the case of the mustang aprox 12"
without scales and a calculator you are just "guessing" unless you copy something that somebody else already uses (edit, you want to take the free length of the spring and do the math to set ride height...example, 1600 front end weight with 800 on each tire and you want to get to 12" ride height you would need a spring with 16" free length x 200 rate = 12 ride height.....but in the real world the rate increases as the spring is compressed, you would need to take that into the calculations also...and reread the paragraph above this, drag race front springs are usually longer than stock)
some springs will be ground flat at both ends so you will need to cut a coil on one end to get a pigtail....you need to figure that into the calculations.
Then the best setup would be track test and adjust