- Jegs
- Engines & Components
- Cylinder Heads
- Edelbrock Performer RPM Aluminum Cylinder Heads for Big Block Chevy
Edelbrock Performer RPM High Compression 454-O Cylinder Heads for Big Block Chevy
350-60439
Items You Need
Performer RPM High Compression Aluminum Cylinder Heads - Oval Port
Designed for big-block Chevy 396-502 c.i.d. engines, these oval port heads feature 100cc semi-open combustion chambers created by angle milling at a 1.5 degree angle to improve intake port alignment and create a smaller chamber without valve shrouding. Using stock flat top style pistons they create an ideal street compression ratio of 9.2:1 without the need to purchase aftermarket domed pistons. A totally unique intake port design yields flow numbers traditionally associated with high performance rectangular port heads, but with the smaller runner size and velocity of an oval port for excellent seat-of-the-pants performance and crisp throttle response. The stainless steel 2.19'' intake and 1.88'' exhaust valves have smaller-than-stock 11/32'' valve stems to promote excellent flow and lighter valve weight. The deck surface and water jackets were specially designed to work with all big-block Chevrolet engine blocks. The heat crossover passage is present, but has been blocked, making these heads not legal for use on emissions controlled engines. Heads include top-quality ARP rocker studs, bronze guides and hardened, ductile iron valve seats.
Tech Tip: To gain more spark plug clearance, Edelbrock recommends using Champion RC Series plugs such as the RC12YC (P/N 192-49776). They are 0.230'' shorter than a conventional spark plug and have a 5/8'' hex for easier access.
| Combustion Chamber Volume: | 100cc |
| Intake Runner Volume: | 290cc |
| Exhaust Runner Volume: | 110cc |
| Intake Valve Diameter: | 2.19'' |
| Exhaust Valve Diameter: | 1.88'' |
| Valve Stem Diameter: | 11/32'' |
| Valve Guides: | Manganese Bronze |
| Deck Thickness: | 9/16'' |
| Valve Spring Diameter: | 1.55'' |
| Valve Spring Maximum Lift: | 0.700'' |
| Rocker Stud: | 7/16'' |
| Guideplate: | Hardened Steel 3/8'' |
| Pushrod Diameter: | 3/8'' |
| Valve Angle: | 26° |
| Exhaust Port Location: | Stock |
| Spark Plug Fitment: | 14mm x 3/4'' Reach, Gasket Seat |
| Valve Lift | Intake | Exhaust |
| .100'' | 73 | 71 |
| .200'' | 143 | 128 |
| .300'' | 207 | 153 |
| .400'' | 251 | 178 |
| .500'' | 284 | 200 |
| .600'' | 299 | 218 |
| .700'' | N/A | N/A |
| Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O | ||
Specifications:
Edelbrock Performer RPM Oval Port Cylinder Heads Edelbrock Performer RPM High Compression Oval Port Cylinder Heads Edelbrock Performer RPM Rectangle Port Cylinder Heads Marine Performer RPM Cylinder Heads
These oval port heads will support over 540 hp with 9.5:1 compression when used as part of the Edelbrock Total Power Package. 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. The semi-open chamber design maximizes efficiency with streetable compression ratios and the smaller-than-stock 11/32'' valve stems promote excellent flow and lighter valve weight.
These oval port heads are similar to the ones above with 100cc semi-open combustion chambers created by angle milling at a 1.5 degree angle to improve intake port alignment and create a smaller chamber without valve shrouding. They create an ideal street compression ratio of 9.2:1 when used with flat top pistons. Smaller-than-stock 11/32'' valve stems promote excellent flow and lighter valve weight.
These rectangle port heads are designed for street/high-performance big-blocks operating from 2500-7000 RPM. The specially designed ports offer increased flow and velocity over standard big-block heads. These heads feature highly-efficient 118cc open-style combustion chamber and high-velocity 315cc long/300cc short intake ports. Smaller-than-stock 11/32'' valve stems promote excellent flow and lighter valve weight.
The Marine Performer RPM heads feature heavy-duty, 1.89'' Inconel exhaust valves that provide added durability for marine applications. They are hard anodized to protect the aluminum in the harsh marine environment. These heads use smaller-than-stock 11/32'' valve stems to promote excellent flow and lighter valve weight. Match them with an Edelbrock Performer RPM manifold, Performer Series 750 cfm marine carb and Performer RPM cam for proven high-performance!
Oval Port Rectangle Port Combustion Chamber Volume 110cc (Standard)
100cc (High Compression)118cc Intake Runner Volume 290cc 315cc Exhaust Runner Volume 110cc 110cc Intake Valve Diameter 2.19" 2.19" Exhaust Valve Diameter 1.88" 1.88" Valve Stem Diameter 11/32" 11/32" Valve Guides Manganese Bronze Manganese Bronze Deck Thickness 9/16" 9/16" Valve Spring Diameter 1.55" 1.55" Valve Spring Maximum Lift .700" .700" Rocker Stud 7/16" 7/16" Guideplate Hardended Steel Hardended Steel Pushrod Diameter 3/8" 3/8" Valve Angle 26° 26° Exhaust Port Location Stock Stock Spark Plug Fitment 14mm x 3/4 reach, gasket seat 14mm x 3/4 reach, gasket seat Made In USA!
Does Edelbrock 60439 fit your vehicle?
1975 GMC G25
- Liter: 7.4
- SubModel: RALLY STX
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Z
1971 GMC SPRINT
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: E
1977 CHEVROLET K20
- Liter: 7.4
- SubModel: CHEYENNE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: S
1973 CHEVROLET EL CAMINO
- Liter: 7.4
- SubModel: CUSTOM
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Y
1974 CHEVROLET C20 PICKUP
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: L
1971 CHEVROLET CORVETTE
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: -
1988 CHEVROLET R20
- Liter: 7.4
- SubModel: SILVERADO
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: N
1973 CHEVROLET K20 SUBURBAN
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Z
1973 CHEVROLET BLAZER
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Z
1969 CHEVROLET K10 SUBURBAN
- Liter: 6.5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 396
- Engine Type: V8 ( 6.5L / 396 )
- Engine Vin: E
1988 CHEVROLET V30
- Liter: 7.4
- SubModel: CHEYENNE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1966 CHEVROLET IMPALA
- Liter: 6.5
- SubModel: SS
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: High Compression 454-0; Complete; 500-600hp; Oval Intake Port; Std. Exh. Port; 2.19 intake/1.88 in. Exh. Valves; Single;CARB E.O. D-215-49; Equipped w/Springs For Use in Hyd. Flat Tappet Camshaft Apps~ Engine Swaps
- CUI: 396
- Engine Type: V8 ( 6.5L / 396 )
- Engine Vin: -
I have a set of 1968 closed chamber oval port heads (3917215) on my 454 with a Flat Tappet 292/292, Lift .550/.550 Cam. . .Would these Performer RPM Heads work or give me any horsepower increase?
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.