# COMP Cams Rocker Arm CS Tw 1.52 3/8 Ultra Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. 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 trunnions, 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.3/8" Stud - 1.52 Ratio - Chevy V8 265-400 (SBC) with Twisted Wedge Heads. Designed for intake valves only. Twisted Wedge heads use standard SBC exhaust valve Rockers.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 trunnions, 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. This Part Fits: Year Make Model Submodel 1980 Buick Century Base 1980 Buick Century Estate 1980 Buick Century Limited 1991-1993 Buick Commercial Chassis Base 1980 Buick Regal Base 1980 Buick Regal Limited 1992-1993 Buick Roadmaster Base 1991-1993 Buick Roadmaster Estate Wagon 1992-1993 Buick Roadmaster Limited 1990-1992 Cadillac Brougham Base 1990-1992 Cadillac Brougham d'Elegance 1992-1993 Cadillac Commercial Chassis Brougham 1980 Cadillac Eldorado Base 1980 Cadillac Eldorado Biarritz 1980 Cadillac Eldorado Cabriolet 1993 Cadillac Fleetwood Base 1993 Cadillac Fleetwood Brougham 1980 Cadillac Seville Base 1980 Cadillac Seville Elegante 1980-1982 Checker Marathon Base 1980-1982 Checker Marathon Deluxe 1994 Chevrolet Blazer Base 1992-1993 Chevrolet Blazer Cheyenne 1987 Chevrolet Blazer Custom Deluxe 1988-1991 Chevrolet Blazer Scottsdale 1987-1994 Chevrolet Blazer Silverado 1994 Chevrolet Blazer Silverado Sport 1980 Chevrolet C10 Big Ten 1980-1981 Chevrolet C10 Cheyenne 1981-1986 Chevrolet C10 Custom 1980 Chevrolet C10 Custom Deluxe 1981 Chevrolet C10 Deluxe 1980-1986 Chevrolet C10 Scottsdale 1980-1986 Chevrolet C10 Silverado 1981-1986 Chevrolet C10 Suburban Custom 1980 Chevrolet C10 Suburban Custom Deluxe 1981 Chevrolet C10 Suburban Deluxe 1980,1982,1984-1986 Chevrolet C10 Suburban Scottsdale 1980,1982-1986 Chevrolet C10 Suburban Silverado 1994-1995 Chevrolet C1500 Base 1988-1995 Chevrolet C1500 Cheyenne 1988-1992 Chevrolet C1500 Scottsdale 1988-1995 Chevrolet C1500 Silverado 1990-1995 Chevrolet C1500 WT 1992-1995 Chevrolet C1500 Suburban Base 1995 Chevrolet C1500 Suburban LS 1995 Chevrolet C1500 Suburban LT 1992-1994 Chevrolet C1500 Suburban Silverado 1980-1981 Chevrolet C20 Cheyenne 1981-1986 Chevrolet C20 Custom 1980 Chevrolet C20 Custom Deluxe 1981 Chevrolet C20 Deluxe 1980-1986 Chevrolet C20 Scottsdale 1980-1986 Chevrolet C20 Silverado 1981-1986 Chevrolet C20 Suburban Custom 1980 Chevrolet C20 Suburban Custom Deluxe 1981 Chevrolet C20 Suburban Deluxe 1980,1982,1984-1986 Chevrolet C20 Suburban Scottsdale 1980,1982-1986 Chevrolet C20 Suburban Silverado 1994-1995 Chevrolet C2500 Base 1988-1995 Chevrolet C2500 Cheyenne 1988-1992 Chevrolet C2500 Scottsdale 1988-1995 Chevrolet C2500 Silverado 1994-1995 Chevrolet C2500 WT 1992-1995 Chevrolet C2500 Suburban Base 1995 Chevrolet C2500 Suburban LS 1995 Chevrolet C2500 Suburban LT 1992-1994 Chevrolet C2500 Suburban Silverado 1980-1981 Chevrolet C30 Cheyenne 1981-1986 Chevrolet C30 Custom 1980 Chevrolet C30 Custom Deluxe 1981 Chevrolet C30 Deluxe 1980-1986 Chevrolet C30 Scottsdale 1980-1986 Chevrolet C30 Silverado 1994-1995 Chevrolet C3500 Base 1988-1995 Chevrolet C3500 Cheyenne 1988-1992 Chevrolet C3500 Scottsdale 1988-1995 Chevrolet C3500 Silverado 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 1981-1987 Chevrolet Camaro Sport 1980-1987,1991-1992 Chevrolet Camaro Z28 1992 Chevrolet Camaro Z28 Heritage Edition 1982 Chevrolet Camaro Z28 Indianapolis 500 Pace Car 1986-1992 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 1980-1982,1984-1991 Chevrolet Corvette Base 1982 Chevrolet Corvette Collector's Edition 1986 Chevrolet Corvette Indianapolis 500 Pace Car 1980-1987 Chevrolet El Camino Base 1981-1986 Chevrolet El Camino Conquista 1980-1981 Chevrolet El Camino Royal Knight 1980-1987 Chevrolet El Camino SS 1983 Chevrolet G10 Base 1980-1995 Chevrolet G10 Beauville 1981-1984,1986-1987 Chevrolet G10 Bonaventure 1980-1995 Chevrolet G10 Chevy Van 1980-1995 Chevrolet G10 Sportvan 1980-1995 Chevrolet G20 Beauville 1983-1984 Chevrolet G20 Bonaventure 1980-1995 Chevrolet G20 Chevy Van 1980-1981 Chevrolet G20 Nomad 1980-1995 Chevrolet G20 Sportvan 1980-1996 Chevrolet G30 Beauville 1983-1984 Chevrolet G30 Bonaventure 1980-1996 Chevrolet G30 Chevy Van 1980-1996 Chevrolet G30 Hi-Cube 1980-1996 Chevrolet G30 Sportvan 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 1980-1986 Chevrolet K10 Silverado 1981-1986 Chevrolet K10 Suburban Custom 1980 Chevrolet K10 Suburban Custom Deluxe 1981 Chevrolet K10 Suburban Deluxe 1980,1982,1984-1986 Chevrolet K10 Suburban Scottsdale 1980,1982-1983,1985-1986 Chevrolet K10 Suburban Silverado 1994-1995 Chevrolet K1500 Base 1988-1995 Chevrolet K1500 Cheyenne 1988-1992 Chevrolet K1500 Scottsdale 1988-1995 Chevrolet K1500 Silverado 1991 Chevrolet K1500 Sport 1990-1995 Chevrolet K1500 WT 1992-1995 Chevrolet K1500 Suburban Base 1995 Chevrolet K1500 Suburban LS 1995 Chevrolet K1500 Suburban 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 1980-1983,1985-1986 Chevrolet K20 Silverado 1981-1986 Chevrolet K20 Suburban Custom 1980 Chevrolet K20 Suburban Custom Deluxe 1981 Chevrolet K20 Suburban Deluxe 1980,1982,1984-1986 Chevrolet K20 Suburban Scottsdale 1980,1982-1983,1985-1986 Chevrolet K20 Suburban Silverado 1994-1995 Chevrolet K2500 Base 1988-1995 Chevrolet K2500 Cheyenne 1988-1992 Chevrolet K2500 Scottsdale 1988-1995 Chevrolet K2500 Silverado 1994-1995 Chevrolet K2500 WT 1992-1995 Chevrolet K2500 Suburban Base 1995 Chevrolet K2500 Suburban LS 1995 Chevrolet K2500 Suburban LT 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 1980-1986 Chevrolet K30 Silverado 1994-1995 Chevrolet K3500 Base 1988-1995 Chevrolet K3500 Cheyenne 1988-1992 Chevrolet K3500 Scottsdale 1988-1995 Chevrolet K3500 Silverado 1980 Chevrolet K5 Blazer Cheyenne 1981-1986 Chevrolet K5 Blazer Custom 1980 Chevrolet K5 Blazer Custom Deluxe 1981 Chevrolet K5 Blazer Deluxe 1984 Chevrolet K5 Blazer Scottsdale 1980-1986 Chevrolet K5 Blazer Silverado 1980-1981 Chevrolet Malibu Base 1980-1983 Chevrolet Malibu Classic 1980 Chevrolet Malibu Classic Estate 1980-1981 Chevrolet Malibu Classic Landau 1980 Chevrolet Malibu Classic Sport 1980 Chevrolet Malibu Estate 1980 Chevrolet Malibu 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 Custom Deluxe 1987 Chevrolet R10 Scottsdale 1987 Chevrolet R10 Silverado 1987 Chevrolet R10 Suburban Custom Deluxe 1987-1988 Chevrolet R10 Suburban Scottsdale 1987-1988 Chevrolet R10 Suburban Silverado ## Details - **Price:** 63.41 CAD - **Vendor:** COMP Cams - **Type:** Rocker Arms ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 63.41 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - Primary - Logo Image - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/comp-cams-rocker-arm-cs-tw-1-52-3-8-ultra) > Updated: 2026-06-26