Pontiac Performer RPM Aluminum Cylinder Heads
Tech Tip: These heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit 350-8549.
To gain more spark plug clearance, Edelbrock recommends using Champion RC Series plugs, such as the RC12YC. They are 0.230'' shorter than conventional spark plugs and have a 5/8'' hex for easier access.
|Combustion Chamber Volume:||72cc|
|Intake Runner Volume:||215cc|
|Exhaust Runner Volume:||175cc|
|Intake Valve Diameter:||2.11''|
|Exhaust Valve Diameter:||1.66''|
|Valve Stem Diameter:||11/32''|
|Valve Guides:||Manganese Bronze|
|Valve Spring Diameter:||1.46''|
|Valve Spring Maximum Lift:||0.575''|
|Exhaust Port Location:||Stock Ram Air IV|
|Spark Plug Fitment:||14mm x 3/4'' Reach, |
|Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O|
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