{"product_id":"comp-cams-rocker-cb-1-73-7-16in-ultra-pro","title":"COMP Cams Rocker CB 1.73 7\/16in Ultra Pro","description":"\u003cp\u003eThe Ultra Pro Magnumâ„¢ XD Rocker Arms are engineered from durable 8650 Steel that outlasts and outperforms other inferior knock-off and import Rockers. A unique machined billet Pushrod seat insert offers exceptional durability. These new Stud mount Rockers are fully rebuildable and use precision-sorted needle bearings and hardened Roller tips to better distribute the load and reduce wear for a longer service life. In addition, they work with most diameter springs and retainers. The XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI optimization for endurance, drag and circle track Applications.\n\u003cbr\u003eMachined 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. This 1823 rocker features a 1.73 ratio for use with 7\/16\" stud Chevrolet 396-454 Big Block.\u003c\/p\u003e\n\n\u003cp\u003eFitment:\n\u003cbr\u003eChevrolet Bel Air Base 1963\n\u003cbr\u003eChevrolet Bel Air Base 1965\n\u003cbr\u003eChevrolet Bel Air Base 1966\n\u003cbr\u003eChevrolet Bel Air Base 1967\n\u003cbr\u003eChevrolet Bel Air Base 1968\n\u003cbr\u003eChevrolet Bel Air Base 1969\n\u003cbr\u003eChevrolet Bel Air Base 1970\n\u003cbr\u003eChevrolet Bel Air Base 1971\n\u003cbr\u003eChevrolet Bel Air Base 1972\n\u003cbr\u003eChevrolet Bel Air Base 1973\n\u003cbr\u003eChevrolet Bel Air Base 1974\n\u003cbr\u003eChevrolet Bel Air Base 1975\n\u003cbr\u003eChevrolet Biscayne Base 1963\n\u003cbr\u003eChevrolet Biscayne Base 1965\n\u003cbr\u003eChevrolet Biscayne Base 1966\n\u003cbr\u003eChevrolet Biscayne Base 1967\n\u003cbr\u003eChevrolet Biscayne Base 1968\n\u003cbr\u003eChevrolet Biscayne Base 1969\n\u003cbr\u003eChevrolet Biscayne Base 1970\n\u003cbr\u003eChevrolet Biscayne Base 1971\n\u003cbr\u003eChevrolet Biscayne Base 1972\n\u003cbr\u003eChevrolet Brookwood Base 1972\n\u003cbr\u003eChevrolet Camaro Base 1967\n\u003cbr\u003eChevrolet Camaro Base 1968\n\u003cbr\u003eChevrolet Camaro Base 1969\n\u003cbr\u003eChevrolet Camaro Base 1970\n\u003cbr\u003eChevrolet Camaro Base 1971\n\u003cbr\u003eChevrolet Camaro Base 1972\n\u003cbr\u003eChevrolet Camaro RS 1967\n\u003cbr\u003eChevrolet Camaro RS 1969\n\u003cbr\u003eChevrolet Camaro SS 1967\n\u003cbr\u003eChevrolet Camaro SS 1968\n\u003cbr\u003eChevrolet Camaro SS 1969\n\u003cbr\u003eChevrolet Camaro SS 1970\n\u003cbr\u003eChevrolet Camaro SS 1971\n\u003cbr\u003eChevrolet Camaro SS 1972\n\u003cbr\u003eChevrolet Camaro Z28 1972\n\u003cbr\u003eChevrolet Caprice Base 1966\n\u003cbr\u003eChevrolet Caprice Base 1967\n\u003cbr\u003eChevrolet Caprice Base 1968\n\u003cbr\u003eChevrolet Caprice Base 1969\n\u003cbr\u003eChevrolet Caprice Base 1970\n\u003cbr\u003eChevrolet Caprice Base 1971\n\u003cbr\u003eChevrolet Caprice 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1967\n\u003cbr\u003eChevrolet Chevelle Concours 1968\n\u003cbr\u003eChevrolet Chevelle Concours 1969\n\u003cbr\u003eChevrolet Chevelle Concours 1970\n\u003cbr\u003eChevrolet Chevelle Concours 1971\n\u003cbr\u003eChevrolet Chevelle Concours 1972\n\u003cbr\u003eChevrolet Chevelle Concours Estate 1969\n\u003cbr\u003eChevrolet Chevelle Concours Estate 1970\n\u003cbr\u003eChevrolet Chevelle Concours Estate 1971\n\u003cbr\u003eChevrolet Chevelle Concours Estate 1972\n\u003cbr\u003eChevrolet Chevelle Deluxe 1967\n\u003cbr\u003eChevrolet Chevelle Deluxe 1973\n\u003cbr\u003eChevrolet Chevelle Greenbrier 1969\n\u003cbr\u003eChevrolet Chevelle Greenbrier 1970\n\u003cbr\u003eChevrolet Chevelle Greenbrier 1971\n\u003cbr\u003eChevrolet Chevelle Greenbrier 1972\n\u003cbr\u003eChevrolet Chevelle Malibu 1968\n\u003cbr\u003eChevrolet Chevelle Malibu 1969\n\u003cbr\u003eChevrolet Chevelle Malibu 1970\n\u003cbr\u003eChevrolet Chevelle Malibu 1971\n\u003cbr\u003eChevrolet Chevelle Malibu 1972\n\u003cbr\u003eChevrolet Chevelle Nomad 1968\n\u003cbr\u003eChevrolet Chevelle Nomad 1969\n\u003cbr\u003eChevrolet Chevelle Nomad 1970\n\u003cbr\u003eChevrolet Chevelle Nomad 1971\n\u003cbr\u003eChevrolet Chevelle Nomad 1972\n\u003cbr\u003eChevrolet Chevelle SS 1965\n\u003cbr\u003eChevrolet Chevelle SS 1966\n\u003cbr\u003eChevrolet Chevelle SS 1967\n\u003cbr\u003eChevrolet Chevelle SS 1968\n\u003cbr\u003eChevrolet Chevelle SS 1969\n\u003cbr\u003eChevrolet Chevelle SS 1970\n\u003cbr\u003eChevrolet Chevelle SS 1971\n\u003cbr\u003eChevrolet Chevelle SS 1972\n\u003cbr\u003eChevrolet Chevy II Nova 1968\n\u003cbr\u003eChevrolet Corvette Base 1965\n\u003cbr\u003eChevrolet Corvette Base 1966\n\u003cbr\u003eChevrolet Corvette Base 1967\n\u003cbr\u003eChevrolet Corvette Base 1968\n\u003cbr\u003eChevrolet Corvette Base 1969\n\u003cbr\u003eChevrolet Corvette Base 1970\n\u003cbr\u003eChevrolet Corvette Base 1971\n\u003cbr\u003eChevrolet Corvette Base 1972\n\u003cbr\u003eChevrolet Corvette Base 1973\n\u003cbr\u003eChevrolet Corvette Base 1974\n\u003cbr\u003eChevrolet Impala Base 1963\n\u003cbr\u003eChevrolet Impala Base 1965\n\u003cbr\u003eChevrolet Impala Base 1966\n\u003cbr\u003eChevrolet Impala Base 1967\n\u003cbr\u003eChevrolet Impala Base 1968\n\u003cbr\u003eChevrolet Impala Base 1969\n\u003cbr\u003eChevrolet Impala Base 1970\n\u003cbr\u003eChevrolet Impala Base 1971\n\u003cbr\u003eChevrolet Impala Base 1972\n\u003cbr\u003eChevrolet Impala Base 1973\n\u003cbr\u003eChevrolet Impala Base 1974\n\u003cbr\u003eChevrolet Impala Base 1975\n\u003cbr\u003eChevrolet Impala Base 1976\n\u003cbr\u003eChevrolet Impala Custom 1975\n\u003cbr\u003eChevrolet Impala Custom 1976\n\u003cbr\u003eChevrolet Impala Custom Landau 1976\n\u003cbr\u003eChevrolet Impala S 1976\n\u003cbr\u003eChevrolet Impala Sport 1975\n\u003cbr\u003eChevrolet Impala Sport 1976\n\u003cbr\u003eChevrolet Impala SS 1965\n\u003cbr\u003eChevrolet Impala SS 1966\n\u003cbr\u003eChevrolet Impala SS 1967\n\u003cbr\u003eChevrolet Kingswood Base 1970\n\u003cbr\u003eChevrolet Kingswood Base 1971\n\u003cbr\u003eChevrolet Kingswood Base 1972\n\u003cbr\u003eChevrolet Kingswood Estate 1970\n\u003cbr\u003eChevrolet Kingswood Estate 1971\n\u003cbr\u003eChevrolet Kingswood Estate 1972\n\u003cbr\u003eChevrolet Laguna Base 1973\n\u003cbr\u003eChevrolet Laguna Base 1974\n\u003cbr\u003eChevrolet Laguna Base 1975\n\u003cbr\u003eChevrolet Laguna Estate 1973\n\u003cbr\u003eChevrolet Laguna S3 1975\n\u003cbr\u003eChevrolet Laguna Type S-3 1974\n\u003cbr\u003eChevrolet Malibu Base 1966\n\u003cbr\u003eChevrolet Malibu Base 1967\n\u003cbr\u003eChevrolet Malibu Base 1973\n\u003cbr\u003eChevrolet Malibu Base 1974\n\u003cbr\u003eChevrolet Malibu Classic 1974\n\u003cbr\u003eChevrolet Malibu Classic 1975\n\u003cbr\u003eChevrolet Malibu Estate 1973\n\u003cbr\u003eChevrolet Malibu Estate 1974\n\u003cbr\u003eChevrolet Monte Carlo Base 1970\n\u003cbr\u003eChevrolet Monte Carlo Base 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