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Product Description
Cylinder Head; Performer RPM; Assembled; Chevy 7.4L/454 Cubic Inch Engine; Aluminum; 290 CC Intake Port/ 110 CC Exhaust Port; 100 CC Chamber Volume; 2.19 Inch Intake Valve/ 1.88 Inch Exhaust Valve; 1.55 Inch Spring Diameter; Single; With Guides/ Seats/ Springs For Hydraulic Roller Cam; Not For Sale Or Use On Pollution Controlled Vehicles
Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.These new cylinder heads are our latest addition to our popular Performer RPM 454-O cylinder heads for big block Chevy's with oval ports. These cylinder heads feature a 100 Cubic Centimeter chamber that is ideal for high compression applications. The unique oval intake port shape produces flow similar to rectangular ports, but the smaller port size provides excellent seat of the pants performance and crisp throttle response. Both the intake and exhaust ports have been profiled for improved air flow. They also have smaller than stock 11/32 Inch valve stems for excellent flow and a lighter weight valve. The heat crossover passage is present, but has been blocked, making these heads not legal for use on emissions controlled engines.
Features & Benefits
- 100 Cubic Centimeter Semi-Open Chamber Heads Feature A 1-1/2 Degree Rolled Over (Angle Milled) Design
- Improves Intake Port Alignment And Provides A Smaller Combustion Chamber Without Shrouding The Valves
- 9.2:1 Compression With Flat Top Pistons For An Outstanding High Performance Street Head
- Performer Applications Include Heat Crossover Passage For Emissions Related Engines
- Limited 1 Year Warranty
Attributes
- Condition: New
- Engine Compatibility: Chevy Big Block V8 7.4L 454 Cubic Inch
- Style: Assembled
- Finish: Satin
- Material: Aluminum
- CNC-Machined: Yes
- Combustion Chamber Volume (cc): 100 Cubic Centimeter
- Intake Runner Volume (CC): 290 Cubic Centimeter
- Exhaust Runner Volume (CC): 110 Cubic Centimeter
- Port Shape: Oval
- Intake Port Location: Standard
- Exhaust Port Location: Standard
- Intake Valve Diameter (IN): 2.19 Inch
- Exhaust Valve Diameter (IN): 1.88 Inch
- Includes Valves: Yes
- Spark Plug Angle: Straight
- Rocker Arm Nut Thread Size: 3/8 Inch
- Includes Rocker Arm Studs: Yes
- Valve Guide Material: Manganese Bronze
- Number Of Springs Per Valve: 1
- Valve Seats Machined: Yes
- Includes Guideplates: Yes
EDELBROCK
E11
Cams, Carburetors, Chrome Acc., Engine Sys., Exhaust Sys., Headers, Heads, Injection, Manifolds, Mufflers, Shocks, Suspension
Warranty Return Policy: Return for supplier inspection - Immediate credit issued upon return to KAO/NTP.
EDEL.CYLHEAD
E38
Cylinder Heads
Warranty Return Policy: Return for supplier inspection - Immediate credit issued upon return to KAO/NTP.