Dart Big M Engine Block - Bare Block - 4.250 in Bore - 9.800 Deck - 4-Bolt Main - 2-Piece Seal - Big Block Chevy 31223344 Sprint Car Seat All parts sold in pairs

All parts sold in pairs

Sideways or Rearward Throttle Body Mounting

Note: For Forward Exit Cable Shifters Only

  13137 or  13113

Dart Big M Engine Block - Bare Block - 4.250 in Bore - 9.800 Deck - 4-Bolt Main - 2-Piece Seal - Big Block Chevy 31223344 Sprint Car Seat All parts sold in pairsProduct 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