Edelbrock 60947 NHRA Small-Block Chevy 64cc Cylinder Head Bare

Delivering improved throttle response and power throughout the RPM range, the Edelbrock 60947 Performer RPM Bare NHRA Stock/Super Stock cylinder head is engineered for 1955-86 Small-Block Chevy applications. This bare aluminum cylinder head features a deck height of 9.025 inches, deck thickness of 0.5625 inches, and operates effectively from 1500 to 6500 rpm. The design incorporates manganese-bronze valve guides with ductile iron valve seats, efficient intake and exhaust ports, and state-of-the-art combustion chamber design. Key features include threaded inserts in rocker stud and exhaust bolt holes for durability, and the head is cast and heat treated at the Edelbrock Foundry with precision machining in the USA.

• Deck Height: 9.025 IN
• Deck Thickness: 0.5625 IN
• Combustion Chamber Volume: 64 CCM
• Intake Runner Volume: 185 CCM
• Exhaust Runner Volume: 65 CCM
• Family: Performer RPM
• Series: Performer RPM
• Construction Type: Bare
• Material: Aluminum
• Grade Type: Performance
• Seat Material: Ductile Iron
• Guide Material: Manganese Bronze
• Valve Angle: 23 deg
• Seat Angle: Exhaust 45 deg/Intake 45 deg
• Head Casting Number: 6088P
• Exhaust Port Location: Standard
• Rotor Center Bore Inside Diameter: angled
• Maximum RPM: 6500
• Quantity: Sold Individually
• Assembled: No
• CNC Ported: No
• EGR Port: No
• Retainer Included: No
• Valve Spring Retainers Included: No
• Valve Locks Included: No
• Rocker Arms Included: No
• Valve Seals Included: No
• Valve Springs Included: No
• Valves Included: No
• Cylinder Head Gasket Included: No
• Valve Cover Gasket Included: No
• Rocker Arm Studs/Bolts Included: No
• Mounting Hardware Included: No
• Guide Plates Included: No