Dart 31223344: 31223344 Big Block Chevy Big M Sportsman Cast Iron Engine Block 4.250 in. Bore
Iron Blocks W/Ductile Iron Main Caps
Big M Sportsman Cast Iron Engine Block Big Block Chevy 4.250 in. Bore 9.800 in. Deck Height (STD.) Standard Mains Ductile Iron 4-Bolt Main Caps Standard Cam Height 2-Piece Rear Main Seal