Chevrolet V8 265-400 Small Block, 3/8" Stud/1.55" Ratio, XD Rocker Arms(16)
The Ultra Pro MagnumT 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. These rocker arms are so durable that they come with a lifetime guarantee against breakage. Only accept authentic "COMP" logo rocker arms to ensure quality and reliability.
Specification:
- Suitable for use with up to 1000 lbs of open spring pressure!
- Billet pushrod seat insert offers exceptional durability
- 8650 steel construction outlasts & outperforms other rockers in accuracy and strength
- Precision-sorted needle bearings better distribute the load and reduce wear for a longer service life
- Advanced FEA & CAD development improve strength & stiffness
- Engineered for use in endurance, circle track and drag race applications with improved strength and durability
- Lifetime Warranty - So strong that we guarantee the rocker bodies against breakage for life!
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1973 - 1975 | Buick | Apollo | Base |
| 1975 | Buick | Apollo | SR |
| 1972 - 1973 | Buick | Centurion | Base |
| 1973 - 1980 | Buick | Century | Base |
| 1975 - 1979 | Buick | Century | Custom, Special |
| 1980 | Buick | Century | Estate |
| 1976 | Buick | Century | Indianapolis 500 Pace Car |
| 1973 - 1975 | Buick | Century | Luxus |
| 1978 - 1980 | Buick | Century | Sport, Limited |
| 1991 - 1993 | Buick | Commercial Chassis | Base |
| 1976 - 1977 | Buick | Electra | Limited, 225 |
| 1973 | Buick | Estate Wagon | Base |
| 1972 | Buick | GS | Base |
| 1977 | Buick | LeSabre | Custom Sport |
| 1972 - 1978 | Buick | LeSabre | Custom, Base |
| 1974 | Buick | LeSabre | Luxus |
| 1978 | Buick | LeSabre | Sport |
| 1973 - 1980 | Buick | Regal | Base |
| 1978 - 1980 | Buick | Regal | Sport, Limited |
| 1976 - 1977 | Buick | Regal | SR |
| 1991 - 1993 | Buick | Roadmaster | Estate Wagon |
| 1992 - 1993 | Buick | Roadmaster | Limited, Base |
| 1972 | Buick | Skylark | 350 |
| 1972 - 1979 | Buick | Skylark | Custom, Base |
| 1976 - 1979 | Buick | Skylark | S |
| 1978 | Buick | Skylark | Sport |
| 1975 - 1977 | Buick | Skylark | SR |
| 1972 | Buick | Sportwagon | Base |
| 1990 - 1992 | Cadillac | Brougham | Base, d'Elegance |
| 1992 - 1993 | Cadillac | Commercial Chassis | Base, Brougham |
| 1980 | Cadillac | Eldorado | Cabriolet, Base, Biarritz |
| 1993 | Cadillac | Fleetwood | Brougham, Base |
| 1980 | Cadillac | Seville | Elegante, Base |
| 1975 | Checker | Marathon | Aerobus |
| 1975 - 1982 | Checker | Marathon | Base, Deluxe |
| 1955 - 1975 | Chevrolet | Bel Air | Base |
| 1955 - 1956 | Chevrolet | Bel Air | Beauville |
| 1955 - 1957 | Chevrolet | Bel Air | Nomad |
| 1958 - 1972 | Chevrolet | Biscayne | Base |
| 1960 | Chevrolet | Biscayne | Fleetmaster |
| 1958 - 1972 | Chevrolet | Brookwood | Base |
| 1967 - 1988 | Chevrolet | Camaro | Base |
| 1979 - 1986 | Chevrolet | Camaro | Berlinetta |
| 1985 - 1990 | Chevrolet | Camaro | Iroc-Z |
| 1973 - 1987 | Chevrolet | Camaro | LT |
| 1976 - 1978 | Chevrolet | Camaro | LT Rally Sport |
| 1976 - 1980 | Chevrolet | Camaro | Rally Sport |
| 1967 - 1992 | Chevrolet | Camaro | RS, Z28 |
| 1981 - 1987 | Chevrolet | Camaro | Sport |
| 1967 - 1972 | Chevrolet | Camaro | SS |
| 1992 | Chevrolet | Camaro | Z28 Heritage Edition, RS Heritage Edition |
| 1982 | Chevrolet | Camaro | Z28 Indianapolis 500 Pace Car |
| 1966 - 1992 | Chevrolet | Caprice | Base |
| 1973 - 1996 | Chevrolet | Caprice | Classic |
| 1986 - 1990 | Chevrolet | Caprice | Classic Brougham |
| 1976 - 1982 | Chevrolet | Caprice | Classic Estate |
| 1976 - 1981 | Chevrolet | Caprice | Classic Landau |
| 1993 - 1994 | Chevrolet | Caprice | Classic LS |
| 1987 - 1990 | Chevrolet | Caprice | Classic LS Brougham |
| 1991 - 1993 | Chevrolet | Caprice | Classic LTZ |
| 1975 - 1980 | Chevrolet | Caprice | Classic Sport |
| 1973 - 1974 | Chevrolet | Caprice | Estate |
| 1975 | Chevrolet | Caprice | Estate Wagon |
| 1979 | Chevrolet | Caprice | Landau |
| 1967 - 1968 | Chevrolet | Chevelle | 300 |
| 1967 - 1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1964 - 1972 | Chevrolet | Chevelle | Base, SS |
| 1967 - 1972 | Chevrolet | Chevelle | Concours |
| 1965 - 1973 | Chevrolet | Chevelle | Deluxe |
| 1969 - 1972 | Chevrolet | Chevelle | Greenbrier, Concours Estate |
| 1968 - 1972 | Chevrolet | Chevelle | Nomad, Malibu |
| 1963 - 1967 | Chevrolet | Chevy II | Base |
| 1963 - 1968 | Chevrolet | Chevy II | Nova |
| 1964 - 1967 | Chevrolet | Chevy II | Nova SS |
| 1988 | Chevrolet | Corvette | 35th Anniversary Edition |
| 1955 - 1991 | Chevrolet | Corvette | Base |
| 1982 | Chevrolet | Corvette | Collector's Edition |
| 1978 - 1986 | Chevrolet | Corvette | Indianapolis 500 Pace Car |
| 1978 | Chevrolet | Corvette | Silver Anniversary Edition |
| 1975 - 1976 | Chevrolet | Corvette | Stingray |
| 1990 - 1991 | Chevrolet | Corvette | ZR-1 |
| 1958 | Chevrolet | Del Ray | Base |
| 1959 - 1985 | Chevrolet | Impala | Base |
| 1975 - 1977 | Chevrolet | Impala | Custom |
| 1976 | Chevrolet | Impala | Custom Landau, S |
| 1981 - 1982 | Chevrolet | Impala | Estate |
| 1977 - 1979 | Chevrolet | Impala | Landau |
| 1975 - 1980 | Chevrolet | Impala | Sport |
| 1964 - 1967 | Chevrolet | Impala | SS |
| 1969 - 1972 | Chevrolet | Kingswood | Base, Estate |
| 1973 - 1975 | Chevrolet | Laguna | Base |
| 1973 | Chevrolet | Laguna | Estate |
| 1975 - 1976 | Chevrolet | Laguna | S3 |
| 1974 | Chevrolet | Laguna | Type S-3 |
| 1964 - 1981 | Chevrolet | Malibu | Base |
| 1974 - 1983 | Chevrolet | Malibu | Classic |
| 1975 - 1980 | Chevrolet | Malibu | Classic Estate |
| 1976 - 1981 | Chevrolet | Malibu | Classic Landau |
| 1977 - 1980 | Chevrolet | Malibu | Classic Sport, Sport |
| 1973 - 1980 | Chevrolet | Malibu | Estate |
| 1976 - 1979 | Chevrolet | Malibu | Landau |
| 1979 | Chevrolet | Malibu | Police |
| 1970 - 1988 | Chevrolet | Monte Carlo | Base |
| 1983 | Chevrolet | Monte Carlo | CL |
| 1973 - 1981 | Chevrolet | Monte Carlo | Landau |
| 1986 - 1988 | Chevrolet | Monte Carlo | LS |
| 1973 - 1977 | Chevrolet | Monte Carlo | S |
| 1978 - 1980 | Chevrolet | Monte Carlo | Sport |
| 1983 - 1988 | Chevrolet | Monte Carlo | SS |
| 1978 - 1979 | Chevrolet | Monza | 2+2 Sport |
| 1976 - 1979 | Chevrolet | Monza | Base, 2+2 Spyder |
| 1977 | Chevrolet | Monza | Mirage |
| 1975 - 1979 | Chevrolet | Monza | S, 2+2 |
| 1978 | Chevrolet | Monza | Sport |
| 1976 - 1977 | Chevrolet | Monza | Towne Coupe Sport, Towne Coupe, Towne Coupe Cabriolet |
| 1976 | Chevrolet | Monza | Towne Coupe Spyder |
| 1969 - 1979 | Chevrolet | Nova | Base |
| 1976 - 1977 | Chevrolet | Nova | Concours |
| 1973 - 1979 | Chevrolet | Nova | Custom |
| 1975 | Chevrolet | Nova | LN |
| 1975 - 1978 | Chevrolet | Nova | Police |
| 1977 - 1979 | Chevrolet | Nova | Rally |
| 1976 | Chevrolet | Nova | SS |
| 1955 - 1957 | Chevrolet | One-Fifty Series | Base |
| 1969 - 1972 | Chevrolet | Townsman | Base |
| 1955 - 1957 | Chevrolet | Two-Ten Series | Base, Del Ray |
| 1959 | Fiat | 1100 | Base |
| 1972 - 1973 | Oldsmobile | 98 | Base |
| 1973 | Oldsmobile | 98 | Regency |
| 1975 - 1992 | Oldsmobile | Custom Cruiser | Base |
| 1975 | Oldsmobile | Custom Cruiser | Panel |
| 1972 - 1980 | Oldsmobile | Cutlass | Base |
| 1980 | Oldsmobile | Cutlass | Brougham, LS |
| 1972 | Oldsmobile | Cutlass | Cruiser |
| 1972 - 1973 | Oldsmobile | Cutlass | S |
| 1978 - 1979 | Oldsmobile | Cutlass | Vista Cruiser |
| 1979 | Oldsmobile | Cutlass | Vista Cruiser Brougham |
| 1978 - 1980 | Oldsmobile | Cutlass Calais | Base |
| 1980 - 1982 | Oldsmobile | Cutlass Cruiser | Base |
| 1980 | Oldsmobile | Cutlass Cruiser | Brougham |
| 1978 - 1979 | Oldsmobile | Cutlass Salon | 442 |
| 1978 - 1980 | Oldsmobile | Cutlass Salon | Brougham, Base |
| 1979 | Oldsmobile | Cutlass Salon | Hurst |
| 1972 - 1980 | Oldsmobile | Cutlass Supreme | Base |
| 1978 - 1980 | Oldsmobile | Cutlass Supreme | Brougham |
| 1972 - 1977 | Oldsmobile | Delta 88 | Royale, Base |
| 1972 | Oldsmobile | F85 | Base |
| 1973 - 1979 | Oldsmobile | Omega | Base |
| 1976 - 1979 | Oldsmobile | Omega | Brougham |
| 1978 - 1979 | Oldsmobile | Omega | Brougham LS |
| 1977 | Oldsmobile | Omega | Deluxe |
| 1976 - 1977 | Oldsmobile | Omega | F85 |
| 1975 | Oldsmobile | Omega | Salon |
| 1976 - 1978 | Oldsmobile | Omega | SX |
| 1977 - 1979 | Oldsmobile | Starfire | SX, Firenza, Base, GT |
| 1972 - 1973 | Oldsmobile | Vista Cruiser | Base |
| 1974 - 1986 | Pontiac | Bonneville | Base |
| 1983 - 1986 | Pontiac | Bonneville | Brougham |
| 1984 - 1986 | Pontiac | Bonneville | LE |
| 1967 - 1975 | Pontiac | Catalina | Safari, Base |
| 1967 | Pontiac | Catalina | Ventura, 2+2 |
| 1972 - 1981 | Pontiac | Firebird | Esprit |
| 1972 - 1992 | Pontiac | Firebird | Formula, Base, Trans Am |
| 1982 - 1986 | Pontiac | Firebird | S/E |
| 1989 - 1992 | Pontiac | Firebird | Trans Am GTA |
| 1989 | Pontiac | Firebird | Trans Am GTA SE |
| 1974 - 1980 | Pontiac | Grand Am | Base |
| 1977 - 1980 | Pontiac | Grand LeMans | LE |
| 1978 | Pontiac | Grand LeMans | SA |
| 1975 - 1980 | Pontiac | Grand LeMans | Safari, Base |
| 1978 - 1987 | Pontiac | Grand Prix | Base |
| 1983 - 1987 | Pontiac | Grand Prix | Brougham |
| 1984 - 1987 | Pontiac | Grand Prix | LE |
| 1975 - 1983 | Pontiac | Grand Prix | LJ |
| 1975 - 1980 | Pontiac | Grand Prix | SJ |
| 1975 | Pontiac | Grandville | Brougham |
| 1974 | Pontiac | LeMans | Safari Luxury, Luxury |
| 1974 - 1980 | Pontiac | LeMans | Safari, Base |
| 1974 - 1977 | Pontiac | LeMans | Sport |
| 1977 | Pontiac | LeMans | Sport Coupe |
| 1983 - 1986 | Pontiac | Parisienne | Brougham, Base |
| 1977 - 1979 | Pontiac | Phoenix | Base |
| 1978 - 1979 | Pontiac | Phoenix | LJ, SJ |
| 1978 - 1979 | Pontiac | Sunbird | Safari, Base |
| 1971 - 1977 | Pontiac | Ventura | Base |
| 1973 - 1975 | Pontiac | Ventura | Custom |
| 1974 | Pontiac | Ventura | GTO |
| 1975 | Pontiac | Ventura | S |
| 1975 - 1977 | Pontiac | Ventura | SJ |