Edelbrock Part Number: 60559

Fits Big Block Chevy V8's with  Rectangular Intake Ports

Please contact us before purchasing, if you are not 100% sure of fitment .

UPC:085347605590

Combustion Chamber Volume (cc):118

Intake Runner Volume (cc):315cc/300cc

Exhaust Runner Volume (cc):110cc

Cylinder Head Style:Assembled

Cylinder Head Material:Cast aluminum

Intake Port Shape:Rectangular

Intake Valve Diameter (in.):2.190 in.

CNC-Machined Combustion Chamber:No

CNC-Machined Intake Runner:No

CNC-Machined Exhaust Runner:No

Combustion Chamber Style:Semi-open

Intake Port Location:Standard

Exhaust Port Shape:Round

Exhaust Port Location:Standard

Intake Valves Included:Yes

Exhaust Valves Included:Yes

Exhaust Valve Diameter (in.):1.880 in.

Valve Springs Included:Yes

Maximum Valve Lift (in.):0.700 in.

Camshaft Style:Hydraulic flat tappet

Outside Diameter of Outer Spring (in.):1.540 in. 

Damper Spring Included:No

Number of Springs Per Valve:Dual

Retainers Included:Yes

Retainer Material:Steel

Locks Included:Yes

Lock Style:7 degree

Valve Stem Seals Included:Yes

Valve Stem Seal Style:Positive stop

Rocker Arm Studs Included:Yes

Rocker Arm Nut Thread Size:7/16 in.-20

Rocker Arms Included:No

Rocker Arm Nuts Included:No

Guideplates Included:Yes

Guideplate Pushrod Size:3/8 in.

Valve Cover Mounting Style:Perimeter bolt

Accessory Bolt Holes Drilled:Yes

Intake Valve Angle:26

Valve Guides Included:Yes

Valve Guide Material:Manganese bronze

Valve Seats Machined:Yes

Valve Seat Machine Style:3-angle

Valve Seat Material:Ductile iron

Cylinder Head Color:Natural

Steam Holes Drilled:No

Oiling Style:Through pushrod

Machined for O-Ring:No

Heat Crossover:No

Remanufactured:No

Quantity:Sold individually.

Notes:Spark plug is closer to center of bore and will interfere with high-dome pistons designed for open chamber heads. Use pistons designed for these heads if a large dome is desired.

Edelbrock Performer RPM Cylinder Heads

Edelbrock Performer RPM aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability. They also include hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. These heads offer improved power throughout the RPM range for greater throttle response and top-end horsepower. Countless options are available; order the model recommended for your vehicle and engine application.