Cylinder Head Specifications: Combustion chamber volume: 65cc / 70cc; Intake runner volume: 185cc & 195cc; Exhaust runner volume: 65cc; Intake valve diameter: 2.02"; Exhaust valve diameter: 1.60"; Valve stem diameter: 11/32"; Valve guides: Maganese Bronze; Deck thickness: 9/16"; Valve spring diameter: 1.46"; Valve spring maximum lift: .575"; Rocker stud: 3/8"; Guideplate: Hardened steel; Pushrod diameter: 5/16"; Valve angle: 23°; Exhaust port location: Stock; Spark plug fitment: 14mm x .750 reach, gasket seat. * Performer RPM Cylinder Heads have all of the same great features as our Performer series heads, but are available with straight or angled spark plug configuration to fit a variety of exhaust applications. Available with a polished finish for a show quality look! ** Match with Edelbrock head gasket sets. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. To use stock rockers on small-block Chevy heads, .100" longer than stock pushrods are required. Edelbrock pushrods #9629 are recommended. Use Head Bolt Kits for easy installation. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. S/B Chevy heads may not be used on engines with less than 4" bore (262, 265, 283, 305, 307 c.i.d.) except with cams having less than .450" valve lift.

This Part Fits:

Year	Make	Model	Submodel
1980	Avanti	II	Base
1992-1993	Buick	Commercial Chassis	Base
1992-1993	Buick	Roadmaster	Base
1992-1993	Buick	Roadmaster	Estate Wagon
1992-1993	Buick	Roadmaster	Limited
1990-1992	Cadillac	Brougham	Base
1990-1992	Cadillac	Brougham	d'Elegance
1994-1995	Cadillac	Commercial Chassis	Base
1992-1995	Cadillac	Commercial Chassis	Brougham
1993-1995	Cadillac	Fleetwood	Base
1993-1995	Cadillac	Fleetwood	Brougham
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	Chevrolet	C10	Cheyenne
1982-1986	Chevrolet	C10	Custom
1980	Chevrolet	C10	Custom Deluxe
1980,1982-1986	Chevrolet	C10	Scottsdale
1980,1982-1986	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	Chevrolet	Camaro	Base
1980-1981	Chevrolet	Camaro	Berlinetta
1987-1990	Chevrolet	Camaro	Iroc-Z
1980	Chevrolet	Camaro	Rally Sport
1981	Chevrolet	Camaro	Sport
1980-1981,1991-1992	Chevrolet	Camaro	Z28
1992	Chevrolet	Camaro	Z28 Heritage Edition
1986-1992	Chevrolet	Caprice	Base
1980,1985,1991-1993	Chevrolet	Caprice	Classic
1980	Chevrolet	Caprice	Classic Landau
1991-1993	Chevrolet	Caprice	Classic LTZ
1980	Chevrolet	Caprice	Classic Sport
1991-1993	Chevrolet	Commercial Chassis	Base
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	Chevrolet	G10	Beauville
1986-1987	Chevrolet	G10	Bonaventure
1980	Chevrolet	G10	Chevy Van
1980-1993	Chevrolet	G10	Sportvan
1980-1982,1984-1995	Chevrolet	G20	Beauville
1984	Chevrolet	G20	Bonaventure
1980-1982,1984-1995	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	Chevrolet	Malibu	Estate
1980	Chevrolet	Malibu	Sport
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
1989-1991	Chevrolet	R1500 Suburban	Scottsdale
1989-1991	Chevrolet	R1500 Suburban	Silverado
1988	Chevrolet	R20	Cheyenne
1987-1988	Chevrolet	R20	Custom Deluxe
1987-1988	Chevrolet	R20	Scottsdale
1987-1988	Chevrolet	R20	Silverado
1987	Chevrolet	R20 Suburban	Custom Deluxe
1987-1988	Chevrolet	R20 Suburban	Scottsdale
1987-1988	Chevrolet	R20 Suburban	Silverado
1989	Chevrolet	R2500	Silverado
1989-1991	Chevrolet	R2500 Suburban	Scottsdale
1989-1991	Chevrolet	R2500 Suburban	Silverado
1988	Chevrolet	R30	Cheyenne
1987-1988	Chevrolet	R30	Custom Deluxe
1987-1988	Chevrolet	R30	Scottsdale
1987-1988	Chevrolet	R30	Silverado
1989-1991	Chevrolet	R3500	Cheyenne
1989-1990	Chevrolet	R3500	Scottsdale
1989-1991	Chevrolet	R3500	Silverado
1995	Chevrolet	Tahoe	Base
1995	Chevrolet	Tahoe	LS
1995	Chevrolet	Tahoe	LT
1987	Chevrolet	V10	Custom Deluxe
1987	Chevrolet	V10	Scottsdale
1987	Chevrolet	V10	Silverado
1987	Chevrolet	V10 Suburban	Custom Deluxe
1987-1988	Chevrolet	V10 Suburban	Scottsdale
1987-1988	Chevrolet	V10 Suburban	Silverado
1989-1991	Chevrolet	V1500 Suburban	Scottsdale
1989-1991	Chevrolet	V1500 Suburban	Silverado
1987	Chevrolet	V20	Custom Deluxe
1987	Chevrolet	V20	Scottsdale
1987	Chevrolet	V20	Silverado