Ford Racing Spring Specs:
M-5300-B:
Front spring rates (lb./in) - 425/530
Rear spring rates (lb./in) - 200/300
M-5300-C:
Front spring rates (lb./in) - 650
Rear spring rates (lb./in) - 200/300
Take your pick. Neither spring was designed for drag racing. I had the C springs and loved them, but I am more into driving on pavement with curves in it. The C's lowered my car in the front 1 1/2" and left the rear at the stock ride height.
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Project: 1988 Coupe - EFI 5.8L Twin Turbo with Victor intake, Canfield heads, F303 cam, March aluminum underdrive pulleys, TKO (or T56 if funds permit), PBR twin piston calipers and 13" rotors up front, 94 Cobra rear calipers and 12" rotors on the rear, 3.73's, Griggs K-member, tubular front control arms, torque arm and panhard bar, polished 99 Cobra wheels.
"The GR-40 kit installation is now complete, and the humble Fox-chassis car will now out-corner and out-stop a ZR-1 or a Viper, and support massive horsepower additions with perfect balance."
Griggs Racing
ICQ# 42269241
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