B/B Chev Big M2 Competition Engine Block, 4.500" Bore, 9.800" Deck, 4-Bolt Main Product:Default Title Turbo Oil Drain KitSuit Ford

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B/B Chev Big M2 Competition Engine Block, 4.500" Bore, 9.800" Deck, 4-Bolt Main Product:Default Title Turbo Oil Drain KitSuit FordB B Chev Big M2 Competition Engine Block, 4. 500" Bore, 9. 800" Deck, 4 Bolt Main Caps DA31213444 31213444 Dart engineered the Big M to be the strongest, most reliable, and easiest to build big block on the market. The Dart Big M2 is designed from the ground up as a true racing engine block which can be used with standard off the shelf big block components. The Big M2 is cast from premium high strength Iron and beefed up in all the critical areas. A