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The Edelbrock Performer Pontiac D-Port complete cylinder head for 1962-1979 389-455 engines with a 4.060in or larger bore features 87cc combustion chambers and optimized oil return passages for improved flow. Cast with thick port walls for CNC or hand porting, the complete head includes guide plates, rocker studs and a quality valvetrain and is machined for 50-state emissions compliance.
Edelbrock Performer D-Port Complete 87cc
