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570 exhaust valves these heads move massive amounts of air
1961-1973 Chevrolet C20 Pickup
Hairpins Included
Sheet metal mounting screwsDerale has been the leader in performance cooling for decades
GM F-Body / X-Body 1968
Hypercoils 7" Coil-Over Spring - 2-1/4" I.D. - 250 lb. Clearance 570 exhaust valves these headsHypercoils are manufactured from the highest quality chrome silicone steel and high tensile chrome silicone steel available in the world. The material used in producing Hypercoils undergoes two separate magnaflux inspections. Once before manufacture and again after coiling. These inspections insure the wire is free from surface imperfections which, if gone undetected could lead to spring failure. The life of a suspension coil is directly related to
