Description

The Edelbrock #60999 Performer RPM cylinder heads are designed for 1955-86 SB Chevy applications. The Edelbrock #60999 Performer RPM heads are perfect for street performancedaily drivers and muscle cars where more performance is needed.The Edelbrock #60999 Performer RPM cylinder head is designed for 1955-86 Small-Block Chevy applications. The Edelbrock #60999 Performer RPM head is perfect for street performancedaily driversstreet rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers 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.

Assembled: Yes

Camshaft Type: Flat Tappet

CNC Ported: No

Combustion Chamber Volume: 64 CCM

Construction Type: Complete

Cylinder Head Gasket Included:No

Deck Height: 9.025 Inch

Deck Thickness: 0.5625″

EGR Port: No

Exhaust Port Location: Standard

Exhaust Runner Volume: 65 CCM

Exhaust Valve Diameter: 1.60″

Family: Performer RPM

Grade Type: Performance

Guide Material: Manganese Bronze

Guide Plate Material: Hardened Steel

Guide Plate Material:Chromoly Steel

Guide Plates Included: Yes

Head Casting Number:31-6088

Horsepower: 350-450 HJ

Intake Runner Volume: 195 CCM

Intake Valve Diameter: 2.02″

Material: Aluminum

Mounting Hardware Included: No

Push Rod Diameter: (Suggested) 0.3125 Inch

Quantity: Sold Individually

Retainer Included: Yes

Rocker Arm Stud Diameter: 0.375 Inch

Rocker Arm Studs/Bolts Included:Yes

Rocker Arms Included:No

Rotor Center Bore Inside Diameter: angled

Seat Angle: Exhaust 45 deg/Intake 45 DD

Seat Material: Ductile Iron

Series: Performer RPM

Valve Angle: 23 DD

Valve Cover Gasket Included: No

Valve Lock Material:Chromoly Steel

Valve Lock Material:Steel

Valve Locks Included:Yes

Valve Seals Included: Yes

Valve Spring Diameter: 1.46 Inch

Valve Spring Maximum Lift: 0.575 Inch

Valve Spring Retainers Included:Yes

Valve Springs Included: Yes

Valve Stem Diameter: 0.3438 Inch

Valves Included:Yes