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Performer RPM Small Block Aluminum Straight Plug Cylinder Heads
Installation Notes: When using stock rockers on SB-Chevy Performer & Performer RPM heads, .100'' longer than stock pushrods are required. Due to valve-to-cylinder bore interference, SB-Chevy heads may not be used on engines with less than 4'' bore (262, 265, 283, 305, 307 c.i.d.) except with camshafts having less than .450'' valve lift.
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: | 64cc |
Intake Runner Volume: | 195cc |
Exhaust Runner Volume: | 65cc |
Intake Valve Diameter: | 2.02'' |
Exhaust Valve Diameter: | 1.60'' |
Valve Stem Diameter: | 11/32'' |
Valve Guides: | Manganese Bronze |
Deck Thickness: | 9/16'' |
Valve Spring Diameter: | 1.46'' |
Valve Spring Maximum Lift: | 0.575'' |
Rocker Stud: | 3/8'' |
Guideplate: | Hardened Steel |
Pushrod Diameter: | 5/16'' |
Valve Angle: | 23° |
Exhaust Port Location: | Stock |
Spark Plug Fitment: | 14mm x 3/4'' Reach, Gasket Seat |
Valve Lift | Intake | Exhaust |
.100'' | 63 | 51 |
.200'' | 124 | 94 |
.300'' | 181 | 128 |
.400'' | 227 | 146 |
.500'' | 253 | 157 |
.600'' | 253 | 163 |
.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:
when using comp cams ultra pro rocker arms 249-1601-16 1.52 with these heads do you need +.100 lenght ?
Would these heads bolt up to an 85 corvette tuned port injection 350?
Will these work with a 1993 tbi 350, I will be buying a new tbi aluminum intake also to go with them
What would the issue be if installed on a 1994 350 ?
What’s the max lift you can run with the included springs ?
Is this just 1 head or the set?
What headers will fit putting the heads on a 84 k10
Best headers for this application
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.