DART Big M Block Big Block Chevy 4.600 Bore / 10.2 Deck (4 Bolt Main) Dart engineered the Big M to be the strongest, most reliable, and easiest to build big block on the market, The Big M Sportsman block is fitted with Ductile Iron 4-bolt main caps.
- Dart BBC Big M Block
- Bare Block
- 4.600 in Bore
- 4.625 Max Bore
- 4.750 Max Stroke
- 632 Max Cubic Inch
- 10.200 Deck
- 4-Bolt Main
- 2 Piece Seal
- Iron
- Weighs 250 Pounds
- Big Block Chevy
- Each