Competition Cams 1605-12 Ultra Pro Magnum Roller Rocker Arm Set

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, these rockers fit Chevrolet V6 with a 7/16" diameter stud.

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Utilizing years of Valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (Dyno and Spintron), the COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that the new Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level.

• 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
2002-2007	Buick Rendezvous
2005-2007	Buick Terraza
1985-2005	Chevrolet Astro
1995-2005	Chevrolet Blazer
1985-1986	Chevrolet C10
1988-1998	Chevrolet C1500
1985-1986	Chevrolet C20
1988-1995	Chevrolet C2500
1993-1995	Chevrolet Camaro
1983-1990	Chevrolet Caprice
1993	Chevrolet Caprice
1978-1979	Chevrolet El Camino
1983-1987	Chevrolet El Camino
2005-2007	Chevrolet Equinox
1996-2007	Chevrolet Express 1500
1996-2005	Chevrolet Express 2500
1985-1995	Chevrolet G10
1985-1995	Chevrolet G20
1985-1995	Chevrolet G30
1983-1985	Chevrolet Impala
2000-2007	Chevrolet Impala
1985-1986	Chevrolet K10
1988-1998	Chevrolet K1500
1985	Chevrolet K20
1988-1995	Chevrolet K2500
1991-1997	Chevrolet Lumina
1996	Chevrolet Lumina APV
1978-1979	Chevrolet Malibu
1983	Chevrolet Malibu
2004-2007	Chevrolet Malibu
1978-1979	Chevrolet Monte Carlo
1983-1988	Chevrolet Monte Carlo
1995-1997	Chevrolet Monte Carlo
2000-2007	Chevrolet Monte Carlo
1987	Chevrolet R10
1987	Chevrolet R20
1988-2004	Chevrolet S10
1988-1994	Chevrolet S10 Blazer
1999-2007	Chevrolet Silverado 1500
2005-2007	Chevrolet Uplander
1987	Chevrolet V10
1997-2005	Chevrolet Venture
2007	GMC Acadia
1985-1986	GMC C1500
1988-1998	GMC C1500
1985-1986	GMC C2500
1988-1995	GMC C2500
1978-1979	GMC Caballero
1983-1987	GMC Caballero
1985-1995	GMC G1500
1985-1995	GMC G2500
1985-1995	GMC G3500
1992-2001	GMC Jimmy
1985-1986	GMC K1500
1988-1998	GMC K1500
1985	GMC K2500
1988-1995	GMC K2500
1987	GMC R1500
1987	GMC R2500
1988-1990	GMC S15
1988-1991	GMC S15 Jimmy
1985-2005	GMC Safari
1996-2007	GMC Savana 1500
1996-2005	GMC Savana 2500
1999-2007	GMC Sierra 1500
1991-2004	GMC Sonoma
1991	GMC Syclone
1992-1993	GMC Typhoon
1987	GMC V1500
2000	Isuzu Hombre
1999-2004	Oldsmobile Alero
1991-1994	Oldsmobile Bravada
1996-2001	Oldsmobile Bravada
1991-1996	Oldsmobile Cutlass Supreme
1996-2004	Oldsmobile Silhouette
2001-2005	Pontiac Aztek
1986	Pontiac Bonneville
1993-1995	Pontiac Firebird

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