DART Big M Block Big Block Chevy 4.500 Bore / 10.2 Deck (4 Bolt Main)

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