Swift Coil-Over Spring - Barrel Type - 2.5" ID x 10" Tall - 375 lb. H764C36XXL This prevents fuel from loading

This prevents fuel from loading up on the plugs

these Top End Kits are performance-proven

800 in Extended

Dart block parts kits include the same quality components we use in our performance engine blocks

Finned Holley Logo

Swift Coil-Over Spring - Barrel Type - 2.5" ID x 10" Tall - 375 lb. H764C36XXL This prevents fuel from loadingINCREASE 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