Chevrolet Performance Mark IV / Gen VI BB Chevy Engine Block - 9.800 in Deck - 4-Bolt Mains - 1-Piece Seal COM11-602-8 Gasket matched ports with smooth

Gasket matched ports with smooth internal geometry to maintain optimal performance and efficiency

Natural / Polished

Just replace the stock crank and camshaft sprockets with Accu-Drive gears and slip in the idler assembly

800 / 4600 RPM

Chevrolet Performance Mark IV / Gen VI BB Chevy Engine Block - 9.800 in Deck - 4-Bolt Mains - 1-Piece Seal COM11-602-8 Gasket matched ports with smoothProduct Description: Engine Mark IV Gen VI Bare Block 4. 470 in Bore 9. 800 in Deck 4 Bolt Mains 1 Piece Seal Iron Big Block Chevy Sold Individually Chevrolet Performance has a wide selection of performance upgrade parts specifically for GM vehicles, as well as crate engines, you can add proven performance to stock vehicles. Looking to personalize your vehicle? Chevrolet Performance is the place. Inside youll discover a complete portfolio of