Standard bore 454 (needs boring), 4 bolt mains, perfect for that 427/454/496 project. I'll guarantee its a good block. Its at a buddies house in south Bakersfield, $500 FIRM. Will consider trade for factory or aftermarket SBC heads with 2.02/1.6 valves, etc, ready to run. They must have the crossover passage for EGR too. Thanks guys!!