Part Number: EDL-77569 Cylinder Head Style: Bare Cylinder Head Material: Aluminum Cylinder Head Finish: Natural Combustion Chamber Volume (cc): 64 CNC-Machined Combustion Chamber: No Intake Runner Volume (cc): 215cc Exhaust Runner Volume (cc): 85cc CNC-Machined Intake Runner: No CNC-Machined Exhaust Runner: No Intake Port Location: Standard Exhaust Port Shape: Square Exhaust Port Location: Standard Spark Plug Style: Angle Intake Valves Included: No Intake Valve Diameter (in): 2.080 in. Exhaust Valves Included: No Exhaust Valve Diameter (in): 1.600 in. Valve Springs Included: No Damper Spring Included: No Retainers Included: No Locks Included: No Valve Stem Seals Included: No Rocker Arm Studs Included: No Rocker Arms Included: No Rocker Arm Nuts Included: No Guideplates Included: No Accessory Bolt Holes Drilled: Yes Intake Valve Angle: 23 Exhaust Valve Angle: 23 Valve Guides Included: Yes Valve Guide Material: Manganese bronze Valve Seats Machined: Yes Valve Seat Machine Style: 3-angle Valve Seat Material: Ductile iron Steam Holes Drilled: No Oiling Style: Through pushrod Machined for O-Ring: No Heat Crossover: No Quantity: Sold individually Dyno-proven race heads. Ideal for those who desire affordable heads that make maximum power, these Victor Jr. heads from Edelbrock are just what the doctor ordered. Designed specifically for the needs of competition and ultra high-performance street engines, they offer increased horsepower and rpm potential in an out-of-the-box, cost-effective, race-winning setup. Features include hardened ductile iron valve seats and phosphor-bronze guides. They accept standard hardware, and most are available in bare and assembled versions