Performer RPM Aluminum Cylinder Heads - Complete
Designed for non-emissions 289, 302, and 351-Windsor Ford engines, these direct bolt-on heads deliver maximum performance in the 1500-6500 rpm range for all high performance street applications and our Performer RPM Power Package. Will not accept rail rockers.Note: Aftermarket 289/302 heads including Brodix, Edelbrock, Ford Motorsport and World Products with 1/2'' bolt hole diameters (block is 7/16'' bolt hole), except 397-M-6049-P303 (''P'' style head). Require 350-9680 inserts with 350-8552 head bolt or 350-9680 insert with 070-154-3601. If head studs are desired use 070-154-4005 (includes inserts).
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.
|Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O|
|Combustion Chamber Volume:||60cc|
|Intake Runner Volume:||170cc|
|Exhaust Runner Volume:||60cc|
|Intake Valve Diameter:||1.90''|
|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, |
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