Swift Coil-Over Spring - 2.5" ID x 8" Tall - 200 lb. Drag Racing Catalog - Fittings & Hoses - Fittings & Plugs - Oval Track Catalog - Parts & Accessories - Quick Fuel Technology 85 to 89 in Circumference

85 to 89 in Circumference Tire

1981-1981 Pontiac Firebird

Unlike "billet plates" that violate the "flex principle" of a flexplate

1975-1985 Mercury Grand Marquis

Swift Coil-Over Spring - 2.5" ID x 8" Tall - 200 lb. Drag Racing Catalog - Fittings & Hoses - Fittings & Plugs - Oval Track Catalog - Parts & Accessories - Quick Fuel Technology 85 to 89 in CircumferenceINCREASE TRACTION, LESS UN SPRUNG MASS, MORE STROKE, INCREASED HANDLING. THE ONLY THING YOU WILL BE LOSING IS TRACK TIME. Swift Springs manufactures springs with differing rates for a variety of circle track racing applications. With options for both dirt and asphalt tracks, Swift has a wide range of coil spring formats, including coil over, dual rate, bump springs, and more. Swift Springs superior engineering has provided the next generation of