Chevrolet Performance BBC Mark IV 454 Block 4.250 Bore / 9.8 Deck

Chevrolet Performance BBC Mark IV 454 Block 4.250 Bore / 9.8 Deck, This GM Performance 454 block has 4 bolt mains with a 9.8 (short deck) deck height, The maximum this block can be bored too is 4.310 and max stroke is 4.250 making a 496 cubic inch big block chevy. perfect foundation for any hot rod, drag car or boat! GM Performance Big Block Chevy 454 Mark IV / GEN VI Block Bare Block  4.250 Bore 4.240 Bore As Shipped 4.310 Max Bore  4.250 Max Stroke  4 Bolt Main  1 Piece Rear Main Seal  9.8 Deck Height ( Short Deck) Weighs 246 Pounds Iron Block  Each