COMP Cams Rockers CS 1.55 3/8in Ultra Pro 1807-12

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 1807 rockers feature a 1.55 ratio for use with 3/8" stud Chevrolet 200-262 V6. For Small Block Chevrolet applications, 1.55 ratio, 3/8" 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 1978 Chevrolet Malibu Base 1978 Chevrolet Malibu Classic 1978 Chevrolet Malibu Classic Landau 1978 Chevrolet Monte Carlo Landau 1978 Chevrolet Monte Carlo Sport 1979 Chevrolet Malibu Base 1979 Chevrolet Malibu Classic 1979 Chevrolet Malibu Classic Landau 1979 Chevrolet Malibu Classic Sport 1979 Chevrolet Malibu Landau 1979 Chevrolet Malibu Police 1979 Chevrolet Malibu Sport 1979 Chevrolet Monte Carlo Base 1979 Chevrolet Monte Carlo Landau 1985 Chevrolet Caprice Classic 1985 Chevrolet Impala Base 1985 Chevrolet Monte Carlo Base 1985 Pontiac Parisienne Base 1985 Pontiac Parisienne Brougham 1986 Chevrolet Caprice Base 1986 Chevrolet Caprice Classic 1986 Chevrolet Caprice Classic Brougham 1986 Chevrolet Monte Carlo Base 1986 Chevrolet Monte Carlo LS 1986 Pontiac Bonneville Base 1986 Pontiac Bonneville Brougham 1986 Pontiac Bonneville LE 1986 Pontiac Grand Prix Base 1986 Pontiac Grand Prix Brougham 1986 Pontiac Grand Prix LE 1986 Pontiac Parisienne Base 1986 Pontiac Parisienne Brougham 1987 Chevrolet Caprice Base 1987 Chevrolet Caprice Classic 1987 Chevrolet Caprice Classic Brougham 1987 Chevrolet Caprice Classic LS Brougham 1987 Chevrolet Monte Carlo Base 1987 Chevrolet Monte Carlo LS 1987 Pontiac Grand Prix Base 1987 Pontiac Grand Prix Brougham 1987 Pontiac Grand Prix LE 1988 Chevrolet Caprice Base 1988 Chevrolet Caprice Classic 1988 Chevrolet Caprice Classic Brougham 1988 Chevrolet Caprice Classic LS Brougham 1988 Chevrolet Monte Carlo Base 1988 Chevrolet Monte Carlo LS 1989 Chevrolet Caprice Base 1989 Chevrolet Caprice Classic 1990 Chevrolet Caprice Base 1990 Chevrolet Caprice Classic 1993 Chevrolet Caprice Classic