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Edelbrock ''Performer RPM'' Ford FE 390 & 428CJ

These lightweight aluminum heads save approximately 36 lbs of weight.  The 76cc heads have a vertical exhaust manifold bolt pattern only; the 72 cc heads can be used with multiple bolt pattern headers and most factory exhaust manifolds.  These heads accept 390/427LR/428 style 2.09” intake and 1.66” exhaust valves.  The 76 cc heads can be machined for MR/HR style 2.19” intakes and 1.73” exhaust valves.  Features include hand blended valve pockets, hardened valve seats for use with unleaded fuel, bronze valve guides, threaded inserts in rocker shaft holes and exhaust manifold holes.