Edelbrock Small Block Chevy E-Street Cylinder Head 70cc Pair

The Edelbrock #5073 E-Street cylinder heads are designed for use with 1955-1986 Small-Block Chevy applications. The Edelbrock E-Street cylinder heads offer American made quality and affordable performance. E-Street cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. The modern combustion chamber designs improve the combustion process and larger than stock intake and exhaust ports move more air through your engine for improve efficiency. For use on pre-pollution controlled vehicles only.

-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 Chevrolet C10-1981 GMC C1500-1981 GMC C2500-1981 GMC C3500-1982 Chevrolet C10-1982 GMC C1500-1982 GMC C2500-1982 GMC C3500-1983 Chevrolet C10-1983 GMC C1500-1983 GMC C2500-1983 GMC C3500-1984 Chevrolet C10-1984 GMC C1500-1984 GMC C2500-1984 GMC C3500-1985 Chevrolet C10-1985 GMC C1500-1985 GMC C2500-1985 GMC C3500-1986 Chevrolet C10-1986 GMC C1500-1986 GMC C2500-1986 GMC C3500

Installation Notes    

    Designed for use with hydraulic flat tappet camshafts only, not compatible with hydraulic roller camshafts
    Use with Hydraulic Flat Tappet Camshafts .550" max lift. (NOT Compatible with Hydraulic Roller Camshafts)
    Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.
    Requires hardened pushrods. Not legal for sale or use on pollution controlled motor vehicles.
    All E-Street Cylinder Heads are sold in pairs
    Dyno tests showed a gain of 16 hp and 11 ft-lbs of torque over our overseas competitor

CNC Ported    No
Combustion Chamber Volume    70.0 cc
Deck Height    9.025 in
Deck Thickness    0.562 in
Exhaust Valve Diameter    1.600 in
Guide Plates Included    Yes
Intake Runner Volume    185.0 cc
Intake Valve Diameter    2.020 in
Material    Aluminum
Push Rod Diameter    0.312 in
Rocker Stud Diameter    0.375 in
Valve Angle    23 deg
Valve Spring Diameter    1.460 in
Valve Spring Maximum Lift    0.550 in
Valve Stem Diameter    0.341 in