Comp Cam Bbc Roller Tip Rockers at Virginia Olsen blog COMP CAMS THUMPR RETRO FIT HYD ROLLER CAMSHAFT 243 257@50 CO34 602 9 Comp Cam 1.75 roller rockers for ls1 CorvetteForum Chevrolet C1 L79 cam equivalent for a roller rocker cam CorvetteForum. The latest development in Rocker arm Technology from COMP Cams are Ultra Pro Magnum Rocker Arms built for 1 2" Studs to increase valve train stiffness and stability. Designed to be used in conjunction with the COMP Cams Hi Tech 1 2" Rocker Stud Kit, the latest versions of COMP Cams Ultra Pro Magnum Rockers are built to utilize 1 2" Studs to stabilize BBC valve trains. Ultra Pro Magnum Roller Rocker Arms feature a modern arched, web like design to deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. The Rockers also boast precision sorted needle bearings and hardened Roller tips. And since they now feature the added benefit of accepting 1 2" Studs, they are a great choice for anyone looking for more stiffness with Stud mount Rockers. These new Ultra Pro Magnum Rocker Arms will provide the ultimate in valve train stability for maximum valve motion both at the track and on the street. 1 2" Studs provide a stiffer valve train to achieve maximum valve motion in BBC enginesDeliver increased strength and rigidity while reducing the moment of inertia and optimizing dynamic balance Catalog User 1 This Part Fits: Year Make Model Submodel 1971 1972 Chevrolet Bel Air Base 1975 1981 Chevrolet C30 Cheyenne 1981 1986 Chevrolet C30 Custom 1975 1980 Chevrolet C30 Custom Deluxe 1981 Chevrolet C30 Deluxe 1975 1986 Chevrolet C30 Scottsdale 1975 1986 Chevrolet C30 Silverado 1966 1969 Chevrolet Caprice Base 1970 1974 Chevrolet Corvette Base 1988 Chevrolet R30 Cheyenne 1987 1988 Chevrolet R30 Custom Deluxe 1987 1988 Chevrolet R30 Scottsdale 1987 1988 Chevrolet R30 Silverado 1970 1972 GMC C15 C1500 Pickup Base 1970 1972 GMC C15 C1500 Suburban Base 1973 1974,1976 GMC Jimmy Base 1976 GMC Jimmy High Sierra 1976 GMC Jimmy Sierra Classic 1976 GMC Jimmy Sierra Grande 1968 1969 GMC K15 K1500 Pickup Base 1976 1977 GMC K25 Suburban Base 1976 1977 GMC K25 Suburban High Sierra 1976 1977 GMC K25 Suburban Sierra Classic 1976 1977 GMC K25 Suburban Sierra Grande 1972 GMC Sprint Base 1972 GMC Sprint Custom