Quote:
Originally Posted by 94cobra69ss396
I know. I just don't know what springs to go with. Right now I have MM Road & Track springs but I don't have any idea what the rates are. Plus I have Tokico Blue shocks right now but I want to change them to Koni SA to match the front ones.
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You'll need to change all the springs and there's a pretty good chance that with the added rear grip the car will oversteer more. Rear wheel rate of 300-550lbs will be needed with a front rate of 750-900 for absolute best handling with a trade off in ride quality over 750.
Here is a list of non MM springs that commonly pop up used, mix and match to save some coin.
Aftermarket Spring Rates
Manufacturer/Part Info Front Spring Rate (lb/in) Rear Spring Rate (lb/in)
Ford Racing B Springs (M5300B) 425-530 (progressive) 200-300 (progressive, solid axle)
Ford Racing C Springs (M5300C) 650 (linear) 200-300 (progressive, solid axle)
Ford Racing F Springs (M5300F) 460-570 (progressive) 170-310 (progressive, solid axle)
Ford Racing G Springs (M5300G) 500-570 (progressive) 170-310 (progressive, solid axle)
Eibach Pro-Kit Springs (94-04 Mustangs) 425-530 (progressive) 200-300 (progressive, solid axle)
Eibach Sportline Springs (79-04 Mustangs) 425-630 (progressive) 140-295 (progressive, solid axle)
H&R Sport Springs (94-04 Mustangs) 490-575 (progressive) 205-250 (progressive, solid axle)
H&R Sport Springs (99-04 Cobra) 700-760 (progressive) 685 (linear, IRS)
H&R Super Sport Springs (94-04 Mustangs) 700-760 (progressive) 275-300 (progressive, solid axle)
H&R Race Springs (79-04 Mustangs) 750-850 (progressive) 260-280 (progressive, solid axle)
H&R Race Springs (99-04 Cobra) 750-850 (progressive) 770 (linear, IRS)
Steeda Sport Springs (79-04 Mustangs) 650 (linear) 200-250 (progressive, solid axle)
Steeda Sport Springs (03-04 Cobra) 720-780 (progressive) 650-790 (progressive, IRS)
Steeda Competition Springs (79-04 Mustangs) 750-850 (progressive) 250 (linear, solid axle)
StangSuspension Springs (94-04 Mustangs) 490-575 (progressive) 205-250 (progressive, solid axle)