COMP Cams Rockers CB 1.7 7/16in Ultra Pro 1820-16

The next design evolution of the Hi-Tech Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application. These XD rockers are fully rebuildable and boast precision-sorted needle bearings and hardened roller tips. And they work with most diameter springs and retainers. The new XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI optimization for drag and circle track applications. Machined from 8650 steel with a billet pushrod seat insert, these Ultra Pro Magnum XD rockers can handle up to 1,000 lbs of spring pressure. These 1820 rockers feature a 1.7 ratio for use with 7/16" stud Chevrolet 396-454 Big Block. For Big Block Chevrolet applications; 1.7" Ratio, 7/16" Stud; Machined billet pushrod seat insert; 8650 steel construction outlasts and outperforms other rockers in accuracy and strength; Ultra Pro Magnum XD Rocker Arm bodies are guaranteed against breakage for life Fits, Fitments 1963 Chevrolet Bel Air Base 1963 Chevrolet Biscayne Base 1963 Chevrolet Impala Base 1965 Chevrolet Bel Air Base 1965 Chevrolet Biscayne Base 1965 Chevrolet Chevelle Base 1965 Chevrolet Chevelle SS 1965 Chevrolet Corvette Base 1965 Chevrolet Impala Base 1965 Chevrolet Impala SS 1966 Chevrolet Bel Air Base 1966 Chevrolet Biscayne Base 1966 Chevrolet Caprice Base 1966 Chevrolet Chevelle Base 1966 Chevrolet Chevelle SS 1966 Chevrolet Corvette Base 1966 Chevrolet Impala Base 1966 Chevrolet Impala SS 1966 Chevrolet Malibu Base 1967 Chevrolet Bel Air Base 1967 Chevrolet Biscayne Base 1967 Chevrolet Camaro Base 1967 Chevrolet Camaro RS 1967 Chevrolet Camaro SS 1967 Chevrolet Caprice Base 1967 Chevrolet Chevelle Base 1967 Chevrolet Chevelle Concours 1967 Chevrolet Chevelle Deluxe 1967 Chevrolet Chevelle SS 1967 Chevrolet Corvette Base 1967 Chevrolet Impala Base 1967 Chevrolet Impala SS 1967 Chevrolet Malibu Base 1968 Chevrolet Bel Air Base 1968 Chevrolet Biscayne Base 1968 Chevrolet Camaro Base 1968 Chevrolet Camaro SS 1968 Chevrolet Caprice Base 1968 Chevrolet Chevelle 300 1968 Chevrolet Chevelle 300 Deluxe 1968 Chevrolet Chevelle Concours 1968 Chevrolet Chevelle Malibu 1968 Chevrolet Chevelle Nomad 1968 Chevrolet Chevelle SS 1968 Chevrolet Chevy II Nova 1968 Chevrolet Corvette Base 1968 Chevrolet Impala Base 1969 Chevrolet Bel Air Base 1969 Chevrolet Biscayne Base 1969 Chevrolet Camaro Base 1969 Chevrolet Camaro RS 1969 Chevrolet Camaro SS 1969 Chevrolet Caprice Base 1969 Chevrolet Chevelle 300 Deluxe 1969 Chevrolet Chevelle Concours 1969 Chevrolet Chevelle Concours Estate 1969 Chevrolet Chevelle Greenbrier 1969 Chevrolet Chevelle Malibu 1969 Chevrolet Chevelle Nomad 1969 Chevrolet Chevelle SS 1969 Chevrolet Corvette Base 1969 Chevrolet Impala Base 1969 Chevrolet Nova Base 1969 Chevrolet Townsman Base 1970 Chevrolet Bel Air Base 1970 Chevrolet Biscayne Base 1970 Chevrolet Camaro Base 1970 Chevrolet Camaro SS 1970 Chevrolet Caprice Base 1970 Chevrolet Chevelle Base 1970 Chevrolet Chevelle Concours 1970 Chevrolet Chevelle Concours Estate 1970 Chevrolet Chevelle Greenbrier 1970 Chevrolet Chevelle Malibu 1970 Chevrolet Chevelle Nomad 1970 Chevrolet Chevelle SS 1970 Chevrolet Corvette Base 1970 Chevrolet Impala Base 1970 Chevrolet Kingswood Base 1970 Chevrolet Kingswood Estate 1970 Chevrolet Monte Carlo Base 1970 Chevrolet Nova Base 1970 Chevrolet Townsman Base 1971 Chevrolet Bel Air Base 1971 Chevrolet Biscayne Base 1971 Chevrolet Camaro Base 1971 Chevrolet Camaro SS 1971 Chevrolet Caprice Base 1971 Chevrolet Chevelle Base 1971 Chevrolet Chevelle Concours 1971 Chevrolet Chevelle Concours Estate 1971 Chevrolet Chevelle Greenbrier 1971 Chevrolet Chevelle Malibu 1971 Chevrolet Chevelle Nomad 1971 Chevrolet Chevelle SS 1971 Chevrolet Corvette Base 1971 Chevrolet Impala Base 1971 Chevrolet Kingswood Base 1971 Chevrolet Kingswood Estate 1971 Chevrolet Monte Carlo Base 1972 Chevrolet Bel Air Base 1972 Chevrolet Biscayne Base 1972 Chevrolet Brookwood Base 1972 Chevrolet Camaro Base 1972 Chevrolet Camaro SS 1972 Chevrolet Camaro Z28 1972 Chevrolet Caprice Base 1972 Chevrolet Chevelle Base 1972 Chevrolet Chevelle Concours 1972 Chevrolet Chevelle Concours Estate 1972 Chevrolet Chevelle Greenbrier 1972 Chevrolet Chevelle Malibu 1972 Chevrolet Chevelle Nomad 1972 Chevrolet Chevelle SS 1972 Chevrolet Corvette Base 1972 Chevrolet Impala Base 1972 Chevrolet Kingswood Base 1972 Chevrolet Kingswood Estate 1972 Chevrolet Monte Carlo Base 1972 Chevrolet Townsman Base 1973 Chevrolet Bel Air Base 1973 Chevrolet Caprice Classic 1973 Chevrolet Caprice Estate 1973 Chevrolet Chevelle Deluxe 1973 Chevrolet Corvette Base 1973 Chevrolet Impala Base 1973 Chevrolet Laguna Base 1973 Chevrolet Laguna Estate 1973 Chevrolet Malibu Base 1973 Chevrolet Malibu Estate 1973 Chevrolet Monte Carlo Base 1973 Chevrolet Monte Carlo Landau 1973 Chevrolet Monte Carlo S 1974 Chevrolet Bel Air Base 1974 Chevrolet Caprice Classic 1974 Chevrolet Caprice Estate 1974 Chevrolet Corvette Base 1974 Chevrolet Impala Base 1974 Chevrolet Laguna Base 1974 Chevrolet Laguna Type S-3 1974 Chevrolet Malibu Base 1974 Chevrolet Malibu Classic 1974 Chevrolet Malibu Estate 1974 Chevrolet Monte Carlo Base 1974 Chevrolet Monte Carlo Landau 1975 Chevrolet Bel Air Base 1975 Chevrolet Caprice Classic 1975 Chevrolet Caprice Classic Sport 1975 Chevrolet Caprice Estate Wagon 1975 Chevrolet Impala Base 1975 Chevrolet Impala Custom 1975 Chevrolet Impala Sport 1975 Chevrolet Laguna Base 1975 Chevrolet Laguna S3 1975 Chevrolet Malibu Classic 1975 Chevrolet Monte Carlo S 1976 Chevrolet Caprice Classic 1976 Chevrolet Caprice Classic Estate 1976 Chevrolet Caprice Classic Landau 1976 Chevrolet Caprice Classic Sport 1976 Chevrolet Impala Base 1976 Chevrolet Impala Custom 1976 Chevrolet Impala Custom Landau 1976 Chevrolet Impala S 1976 Chevrolet Impala Sport