Edelbrock Performer RPM 454-O High-Compression Cylinder Heads 60439

Edelbrock Performer RPM 454-O high-compression cylinder heads offer smaller ports for bigger performance. Designed for big block Chevy's with oval ports, these cylinder heads feature unique oval intake ports that flow similar to rectangular ports but the smaller size provides excellent seat-of-the-pants performance plus crisp throttle response! And, the 100cc chamber volume is ideal for your high-compression application. Both the intake and exhaust ports of these Performer RPM heads have been profiled for improved air flow and they have smaller-than-stock valve stems for less weight and excellent flow. More flow, more power, and more performance for your big block application comes with a set of Edelbrock Performer RPM 454-O high-compression cylinder heads.

Brand: Edelbrock
Manufacturer's Part Number: 60439
Part Type: Cylinder Heads
Product Line: Edelbrock Performer RPM 454-O High-Compression Cylinder Heads
HP Direct Part Number: EDL-60439
UPC: 085347604395
Combustion Chamber Volume (cc): 100
Intake Runner Volume (cc): 290cc
Exhaust Runner Volume (cc): 110cc
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Camshaft Style: Hydraulic flat tappet
Intake Port Shape: Oval
Intake Valve Diameter (in.): 2.190 in.
CNC-Machined Combustion Chamber: No
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
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.
Outside Diameter of Outer Spring (in.): 1.540 in.
Damper Spring Included: Yes
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: Champion RC12YC or equivalent 14mm x 3/4 in. reach with flat gasket seat. Springs for hydraulic flat tappet cams. Both the intake and exhaust ports have been profiled for improved air flow. The heat crossover passage is present, but has been blocked. Since the spark plug location in this head has been moved 0.150" closer toward the bore center, if a domed piston is desired, use a domed piston designed for a closed chamber head for clearance.