Edelbrock Performer RPM FE 390-428 Cobra Jet Aluminum Cylinder Head for Ford FE
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Performer RPM FE Aluminum Heads
Note: 72cc chamber heads have both vertical and diagonal exhaust bolt patterns. 76cc heads have vertical exhaust bolt pattern only.
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: | 72cc |
| Intake Runner Volume: | 170cc |
| Exhaust Runner Volume: | 125cc |
| Intake Valve Diameter: | 2.09'' |
| Exhaust Valve Diameter: | 1.66'' |
| Valve Stem Diameter: | 3/8" |
| Valve Guides: | Manganese bronze |
| Deck Thickness: | 5/8'' |
| Valve Spring Diameter: | 1.55" |
| Valve Spring Maximum Lift: | .600" |
| Rocker Stud: | N/A |
| Guideplate: | N/A |
| Pushrod Diameter: | 3/8 |
| Valve Angle: | 13° |
| Exhaust Port Location: | Stock |
| Spark Plug Fitment: | 14mm x 3/4'' Reach, Gasket Seat |
| Valve Lift | Intake | Exhaust |
| .100'' | 88 | 64 |
| .200'' | 153 | 113 |
| .300'' | 195 | 148 |
| .400'' | 233 | 171 |
| .500'' | 265 | 183 |
| .600'' | 270 | 200 |
| .700'' | N/A | N/A |
| Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O | ||
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
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Specifications:
How much horsepower do the reformer r p m 390/428 heads make over stock heads (ford)
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:
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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.