Ultra Pro Magnum Roller Rocker Arms, 7/16" Stud, 1.52 Ratio, Chevy S
The Ultra Pro MagnumT Roller Rocker Arms for Chevy V8 265-400 cid (SBC) applications not only live up to the lofty standards of the original Pro MagnumsT, but they also take stud mount rocker performance, stability and value to a whole new level. These rocker arms feature a 7/16" stud diameter and 1.52 ratio. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring oversized trunions, precision-sorted needle bearings and hardened roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues.
- Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
- Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues.
- Feature oversized trunions, precision-sorted needle bearings and hardened roller tips.
- Lifetime Warranty - So strong that we guarantee the rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980 | Buick | Century | Base, Limited, Sport, Estate |
| 1991 - 1993 | Buick | Commercial Chassis | Base |
| 1980 | Buick | Regal | Limited, Base, Sport |
| 1992 - 1993 | Buick | Roadmaster | Base, Limited |
| 1991 - 1993 | Buick | Roadmaster | Estate Wagon |
| 1990 - 1992 | Cadillac | Brougham | d'Elegance, Base |
| 1992 - 1993 | Cadillac | Commercial Chassis | Brougham, Base |
| 1980 | Cadillac | Eldorado | Cabriolet, Base, Biarritz |
| 1993 | Cadillac | Fleetwood | Base, Brougham |
| 1980 | Cadillac | Seville | Base, Elegante |
| 1980 - 1982 | Checker | Marathon | Base, Deluxe |
| 1994 | Chevrolet | Blazer | Base, Silverado Sport |
| 1992 - 1993 | Chevrolet | Blazer | Cheyenne |
| 1987 | Chevrolet | Blazer | Custom Deluxe |
| 1991 - 1994 | Chevrolet | Blazer | Nevada |
| 1988 - 1991 | Chevrolet | Blazer | Scottsdale |
| 1987 - 1994 | Chevrolet | Blazer | Silverado |
| 1980 | Chevrolet | C10 | Big Ten, Custom Deluxe |
| 1980 - 1981 | Chevrolet | C10 | Cheyenne |
| 1981 | Chevrolet | C10 | Deluxe |
| 1980 - 1986 | Chevrolet | C10 | Silverado, Custom, Scottsdale |
| 1981 - 1986 | Chevrolet | C10 Suburban | Custom |
| 1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C10 Suburban | Deluxe |
| 1980 - 1986 | Chevrolet | C10 Suburban | Silverado, Scottsdale |
| 1990 - 1993 | Chevrolet | C1500 | 454 SS |
| 1989 - 1995 | Chevrolet | C1500 | Base |
| 1988 - 1992 | Chevrolet | C1500 | Scottsdale |
| 1988 - 1995 | Chevrolet | C1500 | Silverado, Cheyenne |
| 1990 - 1995 | Chevrolet | C1500 | WT |
| 1992 - 1995 | Chevrolet | C1500 Suburban | Base |
| 1995 | Chevrolet | C1500 Suburban | LT, LS |
| 1992 - 1994 | Chevrolet | C1500 Suburban | Silverado |
| 1986 | Chevrolet | C20 | Base |
| 1981 - 1986 | Chevrolet | C20 | Custom |
| 1980 | Chevrolet | C20 | Custom Deluxe |
| 1981 | Chevrolet | C20 | Deluxe |
| 1980 - 1986 | Chevrolet | C20 | Silverado, Cheyenne, Scottsdale |
| 1981 - 1986 | Chevrolet | C20 Suburban | Custom |
| 1980 | Chevrolet | C20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C20 Suburban | Deluxe |
| 1980 - 1986 | Chevrolet | C20 Suburban | Scottsdale, Silverado |
| 1993 | Chevrolet | C2500 | 400 SS, Custom |
| 1988 - 1995 | Chevrolet | C2500 | Cheyenne, Silverado, Base |
| 1988 - 1992 | Chevrolet | C2500 | Scottsdale |
| 1994 - 1995 | Chevrolet | C2500 | WT |
| 1992 - 1995 | Chevrolet | C2500 Suburban | Base |
| 1995 | Chevrolet | C2500 Suburban | LS, LT |
| 1992 - 1994 | Chevrolet | C2500 Suburban | Silverado |
| 1980 - 1982 | Chevrolet | C30 | Base |
| 1980 - 1981 | Chevrolet | C30 | Cheyenne |
| 1981 - 1986 | Chevrolet | C30 | Custom |
| 1980 | Chevrolet | C30 | Custom Deluxe |
| 1981 | Chevrolet | C30 | Deluxe |
| 1980 - 1986 | Chevrolet | C30 | Silverado, Scottsdale |
| 1994 - 1995 | Chevrolet | C3500 | Base |
| 1988 - 1995 | Chevrolet | C3500 | Cheyenne, Silverado |
| 1988 - 1992 | Chevrolet | C3500 | Scottsdale |
| 1980 - 1988 | Chevrolet | Camaro | Base |
| 1980 - 1986 | Chevrolet | Camaro | Berlinetta |
| 1985 - 1990 | Chevrolet | Camaro | Iroc-Z |
| 1987 | Chevrolet | Camaro | LT |
| 1980 | Chevrolet | Camaro | Rally Sport |
| 1989 - 1992 | Chevrolet | Camaro | RS |
| 1992 | Chevrolet | Camaro | RS Heritage Edition, Z28 Heritage Edition |
| 1981 - 1987 | Chevrolet | Camaro | Sport |
| 1980 - 1992 | Chevrolet | Camaro | Z28 |
| 1982 | Chevrolet | Camaro | Z28 Indianapolis 500 Pace Car |
| 1980 - 1992 | Chevrolet | Caprice | Base |
| 1980 - 1996 | Chevrolet | Caprice | Classic |
| 1986 - 1990 | Chevrolet | Caprice | Classic Brougham |
| 1981 - 1982 | Chevrolet | Caprice | Classic Estate |
| 1980 - 1981 | Chevrolet | Caprice | Classic Landau |
| 1993 - 1994 | Chevrolet | Caprice | Classic LS |
| 1987 - 1990 | Chevrolet | Caprice | Classic LS Brougham |
| 1991 - 1993 | Chevrolet | Caprice | Classic LTZ |
| 1980 | Chevrolet | Caprice | Classic Sport |
| 1988 | Chevrolet | Corvette | 35th Anniversary Edition |
| 1980 - 1991 | Chevrolet | Corvette | Base |
| 1982 | Chevrolet | Corvette | Collector's Edition |
| 1986 | Chevrolet | Corvette | Indianapolis 500 Pace Car |
| 1990 - 1991 | Chevrolet | Corvette | ZR-1 |
| 1981 - 1986 | Chevrolet | El Camino | Conquista |
| 1980 - 1981 | Chevrolet | El Camino | Royal Knight |
| 1980 - 1987 | Chevrolet | El Camino | SS, Base |
| 1983 | Chevrolet | G10 | Base |
| 1981 - 1987 | Chevrolet | G10 | Bonaventure |
| 1980 - 1995 | Chevrolet | G10 | Sportvan, Chevy Van, Beauville |
| 1995 | Chevrolet | G20 | Base |
| 1983 - 1984 | Chevrolet | G20 | Bonaventure |
| 1980 - 1995 | Chevrolet | G20 | Chevy Van, Beauville, Sportvan |
| 1980 - 1981 | Chevrolet | G20 | Nomad |
| 1983 - 1984 | Chevrolet | G30 | Bonaventure |
| 1980 - 1996 | Chevrolet | G30 | Sportvan, Chevy Van, Hi-Cube, Beauville |
| 1980 - 1985 | Chevrolet | Impala | Base |
| 1981 - 1982 | Chevrolet | Impala | Estate |
| 1980 | Chevrolet | Impala | Sport |
| 1980 - 1981 | Chevrolet | K10 | Cheyenne |
| 1981 - 1986 | Chevrolet | K10 | Custom |
| 1980 | Chevrolet | K10 | Custom Deluxe |
| 1981 | Chevrolet | K10 | Deluxe |
| 1980 - 1986 | Chevrolet | K10 | Scottsdale, Silverado |
| 1981 - 1986 | Chevrolet | K10 Suburban | Custom |
| 1980 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K10 Suburban | Deluxe |
| 1980 - 1986 | Chevrolet | K10 Suburban | Silverado, Scottsdale |
| 1994 - 1995 | Chevrolet | K1500 | Base |
| 1988 - 1995 | Chevrolet | K1500 | Cheyenne, Silverado |
| 1988 - 1992 | Chevrolet | K1500 | Scottsdale |
| 1991 | Chevrolet | K1500 | Sport |
| 1990 - 1995 | Chevrolet | K1500 | WT |
| 1992 - 1995 | Chevrolet | K1500 Suburban | Base |
| 1995 | Chevrolet | K1500 Suburban | LS, LT |
| 1992 - 1994 | Chevrolet | K1500 Suburban | Silverado |
| 1980 - 1981 | Chevrolet | K20 | Cheyenne |
| 1981 - 1986 | Chevrolet | K20 | Custom |
| 1980 | Chevrolet | K20 | Custom Deluxe |
| 1981 | Chevrolet | K20 | Deluxe |
| 1980 - 1986 | Chevrolet | K20 | Scottsdale, Silverado |
| 1981 - 1986 | Chevrolet | K20 Suburban | Custom |
| 1980 | Chevrolet | K20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K20 Suburban | Deluxe |
| 1980 - 1986 | Chevrolet | K20 Suburban | Silverado, Scottsdale |
| 1988 - 1995 | Chevrolet | K2500 | Cheyenne, Silverado |
| 1988 - 1992 | Chevrolet | K2500 | Scottsdale |
| 1994 - 1995 | Chevrolet | K2500 | WT, Base |
| 1992 - 1995 | Chevrolet | K2500 Suburban | Base |
| 1995 | Chevrolet | K2500 Suburban | LT, LS |
| 1992 - 1994 | Chevrolet | K2500 Suburban | Silverado |
| 1980 - 1981 | Chevrolet | K30 | Cheyenne |
| 1981 - 1986 | Chevrolet | K30 | Custom |
| 1980 | Chevrolet | K30 | Custom Deluxe |
| 1981 | Chevrolet | K30 | Deluxe |
| 1980 - 1986 | Chevrolet | K30 | Scottsdale, Silverado |
| 1994 - 1995 | Chevrolet | K3500 | Base |
| 1988 - 1995 | Chevrolet | K3500 | Cheyenne, Silverado |
| 1988 - 1992 | Chevrolet | K3500 | Scottsdale |
| 1980 | Chevrolet | K5 Blazer | Cheyenne, Custom Deluxe |
| 1981 - 1986 | Chevrolet | K5 Blazer | Custom |
| 1981 | Chevrolet | K5 Blazer | Deluxe |
| 1984 | Chevrolet | K5 Blazer | Scottsdale |
| 1980 - 1986 | Chevrolet | K5 Blazer | Silverado |
| 1980 - 1981 | Chevrolet | Malibu | Base, Classic Landau |
| 1980 - 1983 | Chevrolet | Malibu | Classic |
| 1980 | Chevrolet | Malibu | Estate, Classic Sport, Classic Estate, Sport |
| 1981 - 1988 | Chevrolet | Monte Carlo | Base |
| 1983 | Chevrolet | Monte Carlo | CL |
| 1980 - 1981 | Chevrolet | Monte Carlo | Landau |
| 1986 - 1988 | Chevrolet | Monte Carlo | LS |
| 1980 | Chevrolet | Monte Carlo | Sport |
| 1983 - 1988 | Chevrolet | Monte Carlo | SS |
| 1987 | Chevrolet | R10 | Scottsdale, Silverado, Custom Deluxe |
| 1987 | Chevrolet | R10 Suburban | Custom Deluxe |
| 1987 - 1988 | Chevrolet | R10 Suburban | Scottsdale, Silverado |
| 1989 - 1991 | Chevrolet | R1500 Suburban | Silverado, Scottsdale |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987 - 1988 | Chevrolet | R20 | Silverado, Scottsdale, Custom Deluxe |
| 1987 | Chevrolet | R20 Suburban | Custom Deluxe |
| 1987 - 1988 | Chevrolet | R20 Suburban | Scottsdale, Silverado |
| 1989 - 1991 | Chevrolet | R2500 Suburban | Silverado, Scottsdale |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987 - 1988 | Chevrolet | R30 | Silverado, Custom Deluxe, Scottsdale |
| 1989 - 1990 | Chevrolet | R3500 | Scottsdale |
| 1989 - 1991 | Chevrolet | R3500 | Silverado, Cheyenne |
| 1995 | Chevrolet | Tahoe | Base, LT, LS |
| 1987 | Chevrolet | V10 | Silverado, Scottsdale, Custom Deluxe |
| 1987 | Chevrolet | V10 Suburban | Custom Deluxe |
| 1987 - 1988 | Chevrolet | V10 Suburban | Scottsdale, Silverado |
| 1989 - 1991 | Chevrolet | V1500 Suburban | Scottsdale, Silverado |
| 1987 | Chevrolet | V20 | Custom Deluxe, Scottsdale, Silverado |
| 1987 | Chevrolet | V20 Suburban | Custom Deluxe |
| 1987 - 1988 | Chevrolet | V20 Suburban | Silverado, Scottsdale |
| 1989 - 1991 | Chevrolet | V2500 Suburban | Scottsdale, Silverado |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987 - 1988 | Chevrolet | V30 | Silverado, Scottsdale, Custom Deluxe |
| 1989 - 1990 | Chevrolet | V3500 | Scottsdale |
| 1989 - 1991 | Chevrolet | V3500 | Silverado, Cheyenne |
| 1980 | GMC | C1500 | Heavy Half |
| 1980 - 1986 | GMC | C1500 | High Sierra, Sierra Classic, Base |
| 1988 - 1995 | GMC | C1500 | Sierra SLE |
| 1994 - 1995 | GMC | C1500 | Sierra SLT, Sierra SL, Sierra Special |
| 1988 - 1993 | GMC | C1500 | Sierra SLX, Sierra |
| 1980 - 1982 | GMC | C1500 | Street Coupe, Sierra Grande |
| 1980 - 1995 | GMC | C1500 Suburban | Base |
| 1980 - 1986 | GMC | C1500 Suburban | High Sierra, Sierra Classic |
| 1980 - 1982 | GMC | C1500 Suburban | Sierra Grande |
| 1992 - 1995 | GMC | C1500 Suburban | SLE |
| 1995 | GMC | C1500 Suburban | SLT |
| 1980 - 1986 | GMC | C2500 | High Sierra, Base, Sierra Classic |
| 1980 - 1982 | GMC | C2500 | Sierra Grande |
| 1994 - 1995 | GMC | C2500 | Sierra SL, Sierra SLT |
| 1988 - 1995 | GMC | C2500 | Sierra SLE |
| 1988 - 1993 | GMC | C2500 | Sierra SLX, Sierra |
| 1980 - 1995 | GMC | C2500 Suburban | Base |
| 1980 - 1986 | GMC | C2500 Suburban | Sierra Classic, High Sierra |
| 1980 - 1982 | GMC | C2500 Suburban | Sierra Grande |
| 1992 - 1995 | GMC | C2500 Suburban | SLE |
| 1995 | GMC | C2500 Suburban | SLT |
| 1980 - 1986 | GMC | C3500 | Sierra Classic, High Sierra, Base |
| 1980 - 1982 | GMC | C3500 | Sierra Grande |
| 1994 - 1995 | GMC | C3500 | Sierra SL, Sierra SLT |
| 1988 - 1995 | GMC | C3500 | Sierra SLE |
| 1988 - 1993 | GMC | C3500 | Sierra SLX, Sierra |
| 1981 - 1986 | GMC | Caballero | Amarillo |
| 1981 | GMC | Caballero | Conquista, Royal Knight |
| 1980 - 1987 | GMC | Caballero | Diablo, Base |
| 1980 | GMC | Caballero | Laredo |
| 1983 - 1984 | GMC | G1500 | Rally Custom |
| 1980 - 1995 | GMC | G1500 | Rally, Vandura, Rally STX |
| 1983 - 1984 | GMC | G2500 | Rally Custom |
| 1980 - 1995 | GMC | G2500 | Vandura, Rally, Rally STX |
| 1980 - 1996 | GMC | G3500 | Rally Camper Special, Rally, Vandura Special, Magnavan, Vandura, Rally STX |
| 1981 - 1988 | GMC | G3500 | Rally Custom |
| 1980 - 1991 | GMC | Jimmy | Base |
| 1980 - 1985 | GMC | Jimmy | High Sierra |
| 1980 - 1990 | GMC | Jimmy | Sierra Classic |
| 1980 - 1982 | GMC | Jimmy | Sierra Grande, Street Coupe |
| 1986 | GMC | Jimmy | Silverado |
| 1980 - 1986 | GMC | K1500 | Sierra Classic, Base, High Sierra |
| 1980 - 1982 | GMC | K1500 | Sierra Grande |
| 1988 - 1995 | GMC | K1500 | Sierra SLE |
| 1995 | GMC | K1500 | Sierra SLS |
| 1994 - 1995 | GMC | K1500 | Sierra SLT, Sierra SL, Sierra Special |
| 1988 - 1993 | GMC | K1500 | Sierra SLX, Sierra |
| 1993 | GMC | K1500 | Sierra Sport |
| 1980 - 1995 | GMC | K1500 Suburban | Base |
| 1980 - 1986 | GMC | K1500 Suburban | Sierra Classic, High Sierra |
| 1980 - 1982 | GMC | K1500 Suburban | Sierra Grande |
| 1992 - 1995 | GMC | K1500 Suburban | SLE |
| 1995 | GMC | K1500 Suburban | SLT |
| 1980 - 1986 | GMC | K2500 | Base, High Sierra, Sierra Classic |
| 1980 - 1982 | GMC | K2500 | Sierra Grande |
| 1994 - 1995 | GMC | K2500 | Sierra SL, Sierra SLT |
| 1988 - 1995 | GMC | K2500 | Sierra SLE |
| 1988 - 1993 | GMC | K2500 | Sierra SLX, Sierra |
| 1980 - 1995 | GMC | K2500 Suburban | Base |
| 1980 - 1986 | GMC | K2500 Suburban | High Sierra, Sierra Classic |
| 1980 - 1982 | GMC | K2500 Suburban | Sierra Grande |
| 1992 - 1995 | GMC | K2500 Suburban | SLE |
| 1995 | GMC | K2500 Suburban | SLT |
| 1980 - 1986 | GMC | K3500 | Sierra Classic, Base, High Sierra |
| 1980 - 1982 | GMC | K3500 | Sierra Grande |
| 1994 - 1995 | GMC | K3500 | Sierra SL, Sierra SLT |
| 1988 - 1995 | GMC | K3500 | Sierra SLE |
| 1988 - 1993 | GMC | K3500 | Sierra SLX, Sierra |
| 1987 | GMC | R1500 | Base, High Sierra, Sierra Classic |
| 1987 - 1991 | GMC | R1500 Suburban | Base |
| 1987 | GMC | R1500 Suburban | High Sierra |
| 1987 - 1989 | GMC | R1500 Suburban | Sierra Classic |
| 1990 | GMC | R1500 Suburban | SLE |
| 1987 - 1989 | GMC | R2500 | Base, High Sierra, Sierra Classic |
| 1987 - 1991 | GMC | R2500 Suburban | Base |
| 1987 | GMC | R2500 Suburban | High Sierra |
| 1987 - 1989 | GMC | R2500 Suburban | Sierra Classic |
| 1990 | GMC | R2500 Suburban | SLE |
| 1987 - 1991 | GMC | R3500 | Base |
| 1987 - 1989 | GMC | R3500 | Sierra Classic, High Sierra |
| 1990 - 1991 | GMC | R3500 | SLE |
| 1987 | GMC | V1500 | Sierra Classic, High Sierra, Base |
| 1987 - 1991 | GMC | V1500 Suburban | Base |
| 1987 | GMC | V1500 Suburban | High Sierra |
| 1987 - 1989 | GMC | V1500 Suburban | Sierra Classic |
| 1990 | GMC | V1500 Suburban | SLE |
| 1987 | GMC | V2500 | High Sierra, Sierra Classic, Base |
| 1987 - 1991 | GMC | V2500 Suburban | Base |
| 1987 | GMC | V2500 Suburban | High Sierra |
| 1987 - 1989 | GMC | V2500 Suburban | Sierra Classic |
| 1990 | GMC | V2500 Suburban | SLE |
| 1987 - 1991 | GMC | V3500 | Base |
| 1987 - 1989 | GMC | V3500 | High Sierra, Sierra Classic |
| 1990 - 1991 | GMC | V3500 | SLE |
| 1993 | GMC | Yukon | GT |
| 1992 - 1995 | GMC | Yukon | SLE, Base |
| 1995 | GMC | Yukon | SLT |
| 1992 - 1994 | GMC | Yukon | Sport |
| 1991 - 1992 | Oldsmobile | Custom Cruiser | Base |
| 1980 | Oldsmobile | Cutlass | Base, Brougham, LS |
| 1980 | Oldsmobile | Cutlass Calais | Base |
| 1980 - 1982 | Oldsmobile | Cutlass Cruiser | Base |
| 1980 | Oldsmobile | Cutlass Cruiser | Brougham |
| 1980 | Oldsmobile | Cutlass Salon | Brougham, Base |
| 1980 | Oldsmobile | Cutlass Supreme | Base, Brougham |
| 1983 - 1986 | Pontiac | Bonneville | Base, Brougham |
| 1984 - 1986 | Pontiac | Bonneville | LE |
| 1980 - 1981 | Pontiac | Firebird | Esprit |
| 1980 - 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 |
| 1980 | Pontiac | Grand Am | Base |
| 1980 | Pontiac | Grand LeMans | LE, Safari, Base |
| 1980 - 1987 | Pontiac | Grand Prix | Base |
| 1983 - 1987 | Pontiac | Grand Prix | Brougham |
| 1984 - 1987 | Pontiac | Grand Prix | LE |
| 1980 - 1983 | Pontiac | Grand Prix | LJ |
| 1980 | Pontiac | Grand Prix | SJ |
| 1980 | Pontiac | LeMans | Safari, Base |
| 1983 - 1986 | Pontiac | Parisienne | Base, Brougham |