Dart Big M Engine Block - 4.500" Bore - 10.200 Deck - 4-Bolt Main - 2 Piece Seal - Iron - BB Chevy 97200BK Rear Main Seal Adapter

Rear Main Seal Adapter

2" Drop Spindle Set

5/16" Valve Stem

GM ZZZ / ZZ1 / ZZ2 Engines

2 pumper and more

Dart Big M Engine Block - 4.500" Bore - 10.200 Deck - 4-Bolt Main - 2 Piece Seal - Iron - BB Chevy 97200BK Rear Main Seal AdapterProduct Description: Engine Big M Bare Block 4. 500 in Bore 10. 200 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