1968-96 Chevy-GMC Truck Edelbrock 60499 Single Hi-Compression Cylinder HeadComplete, 454-0 Big Block

Cylinder Head Specifications: Combustion chamber volume: 100cc; Intake runner volume: 290cc; Exhaust runner volume: 110cc; Intake valve diameter: 2.19"; Exhaust valve diameter: 1.88"; Valve stem diameter: 11/32"; Valve guides: Manganese bronze; Deck thickness: 9/16"; Valve spring diameter: 1.55"; Valve spring maximum lift: .700"; Rocker stud: 7/16"; Guideplate: Hardened steel; Pushrod diameter: 3/8"; Valve angle: 26°; Exhaust port location: Stock; Spark plug fitment: 14mm x 3/4 reach, gasket seat. * Match with Edelbrock head gasket sets. Bare heads will have valve guides and seats installed, but will require final sizing & a valve job to match the valves you will be using. Recommended spark plugs 14mm x 3/4" reach with flat gasket seat (Champion RC12YC).

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