Gasket Intake Manifold Set 7.4L 8.2L 454 502 CID GM with Square Ports

Intake Manifold Gasket for GM 7.4L 454 CID Big Block V8 Engines with Square Ports. All 454 and 502 engines with 365 and Higher FACTORY Horsepower used Square Port Cylinder Heads. Chris Craft, Flagship Marine, Hardin Marine, Indmar, Marine Power, Mercruiser, Panther Jet Marine, PCM, and Crusader