Swift Coil-Over Spring - Barrel Type - 2.5" ID x 12" - 275 lb. EFI Engine Lift Plate Adapter GM 6-Cylinder / MSD Pro-Billet

GM 6-Cylinder / MSD Pro-Billet

40 in Round Port

J-bolt Kit

a whopping 220% increase that totally eliminates failure at this point

Swift Coil-Over Spring - Barrel Type - 2.5" ID x 12" - 275 lb. EFI Engine Lift Plate Adapter GM 6-Cylinder / MSD Pro-BilletINCREASE 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