Edelbrock Performer RPM Big Block Chevy Rectangle Port Cylinder Head Hydraulic Flat Tappet Springs Bare

The Edelbrock #60549 Performer RPM Bare Rectangle Port cylinder heads are designed for Big-Block Chevy applications. The Edelbrock #60547 Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. These cylinder heads deliver great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.

Installation Notes    

    Bare heads will have valve guides & seats installed, but will require final sizing & a valve job to match the valves you will be using.
    Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.
    All Performer and Performer RPM Big-Block Chevy heads: Spark plug is closer to center of bore, will interfere with high-dome pistons for open chamber heads.
    Use pistons designed for our heads. Match with Edelbrock head gasket sets.
    Designed for street/high-performance big-blocks operating from 2500-7000 rpm
    Specially designed ports for increased flow and velocity over standard big-block cylinder heads
    Highly-efficient 118cc open-style combustion chamber
    High-velocity 315cc long/300cc short intake ports
    Smaller-than-stock 11/32" valve stems promote excellent flow and lighter valve weight

CNC Ported    No
Combustion Chamber Volume    118.0 cc
Deck Height    9.8 in
Deck Thickness    0.562 in
Guide Plates Included    Yes
Intake Runner Volume    315.0 cc
Material    Aluminum
Push Rod Diameter    0.375 in
Rocker Stud Diameter    0.437 in
Valve Angle    26 deg

-1975 Chevrolet C10-1976 Chevrolet C10-1977 Chevrolet C10-1978 Chevrolet C10-1979 Chevrolet C10-1979 GMC C1500-1979 GMC C2500-1979 GMC C3500-1980 Chevrolet C10-1980 GMC C1500-1980 GMC C2500-1980 GMC C3500-1981 GMC C2500-1981 GMC C3500-1982 GMC C2500-1982 GMC C3500-1983 GMC C2500-1983 GMC C3500-1984 GMC C2500-1984 GMC C3500-1985 GMC C2500-1985 GMC C3500-1986 GMC C2500-1986 GMC C3500-1988 Chevrolet C3500-1988 GMC C3500-1989 Chevrolet C3500-1989 GMC C3500-1990 Chevrolet C1500-1990 Chevrolet C3500-1990 GMC C3500-1991 Chevrolet C1500-1991 Chevrolet C2500-1991 Chevrolet C3500-1991 GMC C2500-1991 GMC C3500-1992 Chevrolet C1500-1992 Chevrolet C2500-1992 Chevrolet C3500-1992 GMC C2500-1992 GMC C3500-1993 Chevrolet C1500-1993 Chevrolet C2500-1993 Chevrolet C3500-1993 GMC C2500-1993 GMC C3500-1994 Chevrolet C2500-1994 Chevrolet C3500-1994 GMC C2500-1994 GMC C3500-1995 Chevrolet C2500-1995 Chevrolet C3500-1995 GMC C2500-1995 GMC C3500