Isky Cams Endurance Plus Dual Valve Springs (Orange/Yellow/Brown) - 1.530" O.D., .730" I.D. H753C3056 Made of high-grade materials such

Made of high-grade materials such as silicone

and other items using threaded tube

Eibach makes the finest performance springs in the world

after attachment to the hose

GM F-Body 1970-73

Isky Cams Endurance Plus Dual Valve Springs (Orange/Yellow/Brown) - 1.530" O.D., .730" I.D. H753C3056 Made of high-grade materials suchTest proven for 850 racing miles, Endurance Plus Springs featue a higher alloy outer spring "Plus" special processing for increased durability. Excellent for use in Sprint Cars, Super Modifieds, Super Late Models, Road Racing and applications up to 8400 RPM. As the world's largest racing, performance, and economy cam manufacturer, Isky maintains a dynamometer testing program for constant improvement of camshaft and valve train design. These tests are