Competition Cams 1618-1 Ultra Pro Magnum Roller Rocker Arm

This Ultra Pro Magnum rocker is made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, this rocker fits '88+ Chevrolet Small Block and V6 with a 3/8" diameter stud.

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As LS engines continue to grow in popularity, COMP Cams(R) has expanded its line of rocker arms to build components specific to LS applications. New Ultra Pro Magnum(TM) Rockers are made from investment-cast 8650 Chromemoly steel, utilize upgraded Trunions and needle bearings over stock and are stronger, stiffer and more durable than the stock parts. They also feature a 1.8 ratio (compared to the stock rockers' 1.7) and utilize a roller tip instead of a slider. The higher ratio and increased stiffness make these rockers a great option for increasing lift without changing cams. This increased stiffness, along with the upgraded Trunion package and roller wheel, also makes them a perfect choice when running aftermarket valve springs. The rockers are available in a bolt-down design that uses stock rocker stands and in a stud-mount option for customers looking for an adjustable valve train. The stud-mount version is perfect for individuals running mechanical lifters as well. COMP Cams(R) LS Ultra Pro Mangum(TM) Rockers Arms are available for LS1, LS2, LS3, LS6 and LS-based truck engines and come in individual sets or kits featuring studs and guide plates. Kits do not include pushrods, but they are available separately.

• 8650 Chromemoly Steel
• 29 Percent Stronger Than Pro Magnum
• Redesigned Steel Stud Mount Rocker
• Reduced Weight And Greater Strength
• Increased High RPM Stability
• Black Oxide Exterior Finish
• Increased Retainer And Valve Spring Clearances
• Lifetime Warranty

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Application Summary:

Year	Make/Model
1991-1993	Buick Commercial Chassis
2002-2007	Buick Rendezvous
1991-1993	Buick Roadmaster
2005-2007	Buick Terraza
1990-1992	Cadillac Brougham
1992-1993	Cadillac Commercial Chassis
1993	Cadillac Fleetwood
1988-2005	Chevrolet Astro
1988-2005	Chevrolet Blazer
1988-1998	Chevrolet C1500
1992-1995	Chevrolet C1500 Suburban
1988-1995	Chevrolet C2500
1992-1995	Chevrolet C2500 Suburban
1988-1995	Chevrolet C3500
1988-1995	Chevrolet Camaro
1988-1996	Chevrolet Caprice
1988-1991	Chevrolet Corvette
2005-2007	Chevrolet Equinox
1996-2007	Chevrolet Express 1500
1996-2005	Chevrolet Express 2500
1988-1995	Chevrolet G10
1988-1995	Chevrolet G20
1988-1996	Chevrolet G30
2000-2007	Chevrolet Impala
1988-1998	Chevrolet K1500
1992-1995	Chevrolet K1500 Suburban
1988-1995	Chevrolet K2500
1992-1995	Chevrolet K2500 Suburban
1988-1995	Chevrolet K3500
1991-1997	Chevrolet Lumina
1996	Chevrolet Lumina APV
2004-2007	Chevrolet Malibu
1988	Chevrolet Monte Carlo
1995-1997	Chevrolet Monte Carlo
2000-2007	Chevrolet Monte Carlo
1988	Chevrolet R10 Suburban
1989-1991	Chevrolet R1500 Suburban
1988	Chevrolet R20
1988	Chevrolet R20 Suburban
1989-1991	Chevrolet R2500 Suburban
1988	Chevrolet R30
1989-1991	Chevrolet R3500
1988-2004	Chevrolet S10
1988-1994	Chevrolet S10 Blazer
1999-2007	Chevrolet Silverado 1500
1995	Chevrolet Tahoe
2005-2007	Chevrolet Uplander
1988	Chevrolet V10 Suburban
1989-1991	Chevrolet V1500 Suburban
1988	Chevrolet V20 Suburban
1989-1991	Chevrolet V2500 Suburban
1988	Chevrolet V30
1989-1991	Chevrolet V3500
1997-2005	Chevrolet Venture
2007	GMC Acadia
1988-1998	GMC C1500
1992-1995	GMC C1500 Suburban
1988-1995	GMC C2500
1992-1995	GMC C2500 Suburban
1988-1995	GMC C3500
1988-1995	GMC G1500
1988-1995	GMC G2500
1988-1996	GMC G3500
1988-2001	GMC Jimmy
1988-1998	GMC K1500
1992-1995	GMC K1500 Suburban
1988-1995	GMC K2500
1992-1995	GMC K2500 Suburban
1988-1995	GMC K3500
1988-1991	GMC R1500 Suburban
1988-1989	GMC R2500

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