Dart Big M Engine Block - Bare Block - 4.500 in Bore - 9.800 Deck - 4-Bolt Main - 2-Piece Seal - Big Block Chevy 31213444 RU003003M All dB exhaust systems are

All dB exhaust systems are constructed from premium stainless steel to deliver lasting performance

1 gram and utilize ARP 2000 7/16" rod bolts

Simpson P209Z at low everyday prices

including our tapered spacers

Bolt-On Cap

Dart Big M Engine Block - Bare Block - 4.500 in Bore - 9.800 Deck - 4-Bolt Main - 2-Piece Seal - Big Block Chevy 31213444 RU003003M All dB exhaust systems areProduct Description: Engine Big M Bare Block 4. 500 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