Draco 10" x 3" Coil-Over Spring - 300 lb. - Purple 491090 they must also match the

they must also match the frequency of all the rest of the parts in the valve train

1975-1984 GMC Jimmy

392 in Long

1 in Square

Draco 10" x 3" Coil-Over Spring - 300 lb. - Purple 491090 they must also match theDraco Racing Coil Over Springs are engineered to offer the fewest coil and largest coil gap currently available, reducing weight while providing maximum travel with a linear rate. All springs are preset to prevent sag. Draco Spring is a manufacture of racing springs available in a large selection of sizes and rates. A family owned and operated business since 1969, Draco Spring has grown into the one of the largest custom spring manufacturers in the