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|
|Valve Spring Diameter:||1.46''|
|Valve Spring Maximum Lift:||0.575''|
|Exhaust Port Location:||Stock|
|Spark Plug Fitment:||14mm x 3/4'' Reach, |
|Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O|
Edelbrock Performer RPM Small Block Chevrolet Cylinder Heads
The Performer RPM Small Block aluminum cylinder heads are designed for Small Block Chevy 265, 283, 302, 305, 307 327, 350 and 400ci engines up to 2003. Performer heads are designed with compact combustion chambers and high-flow ports to increase throttle response and overall performance throughout the RPM power band. These cylinder heads are designed in-house in Torrance California and are cast from A356 aluminum heat treated to T-6 Aluminum specifications.
All performer heads feature a 9/16-inch deck, extra thick port walls with high flowing ports, ductile iron seats, stainless steel valves, threaded inserts for rocker studs and exhaust bolts as well as manganese bronze valve guides. Available with either stock straight or angled spark plug configuration, heads are available bare or dressed and pre-assembled. All heads are all sold individually. Reference individual part number listings for a comprehensive list of specifications.
Edelbrock Performer RPM Series Cylinder Heads are legal on pre-pollution controlled vehicles only.
Does this come in pares or just one head
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