Dart Big M Engine Block - Bare Block - 4.250 in Bore - 9.800 Deck - 4-Bolt Main - 2-Piece Seal - Big Block Chevy 31213344 Helmet Air System Blower Mount 3 Rev Limiters - Choose

3 Rev Limiters - Choose between 4 options for each: Fuel Only

Pump Swivel Mount

Cable Bracket

374" Width

Replacement Gauge Lights

Dart Big M Engine Block - Bare Block - 4.250 in Bore - 9.800 Deck - 4-Bolt Main - 2-Piece Seal - Big Block Chevy 31213344 Helmet Air System Blower Mount 3 Rev Limiters - ChooseProduct 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