Dart Big M Engine Block - Bare Block - 4.250 in Bore - 9.800 Deck - 4-Bolt Main - 2-Piece Seal - Big Block Chevy 31213344 CVR Performance Products and an oven bonded aluminum

and an oven bonded aluminum core to provide efficient cooling with the lightest weight possible

Cracked Cap Design

Eight intake port seal replacements for LSXR™ LS3/L76/L92/L99 manifolds

Vehicle Applications: 2007-2019 Toyota Tundra 66

Specializing in custom cutting

Dart Big M Engine Block - Bare Block - 4.250 in Bore - 9.800 Deck - 4-Bolt Main - 2-Piece Seal - Big Block Chevy 31213344 CVR Performance Products and an oven bonded aluminumProduct Description: Engine Big M Bare Block 4. 250 in Bore 9. 800 Deck 4 Bolt Main 2 Piece Seal Iron Big Block Chevy Sold Individually Since 1981, Dart Machinery has become the acknowledged leader in producing race winning components. Dart Machinery aluminum and cast iron engine blocks are designed to meet the specialized needs of racers and performance enthusiasts. Dart components are developed in house, manufactured on Dartas own CNC machining