The Edelbrock Performer Pontiac D-Port complete cylinder head for 1962-1979 389-455 engines (with 4.060in bore or larger) features optimized oil return passages and a spark plug relocated closer to the exhaust valve for improved combustion. Machined and assembled in the U.S.A., the complete head includes guide plates, rocker studs and a high-quality valvetrain and is machined for 50-state emissions compliance.
Edelbrock Performer D-Port Complete 72cc