DART Big M Block Big Block Chevy 4.500 Bore / 10.2 Deck (4 Bolt Main) With Cast Main Caps, Dart has engineered the Big M sportsman block to be the strongest, most reliable, and easiest to build big block on the market.
- Dart Big M BBC Block
- Bare Block
- 4.500 in Bore
- 4.625 Max Bore
- 4.750 Max Stroke
- 632 Max Cubic Inch
- 10.200 Deck (Tall Deck)
- 4-Bolt Main
- 2 Piece Seal
- Iron
- Weighs 250 Pounds
- Big Block Chevy
- Each