Standard bore 440 block and complete 452 heads. Block is missing one main cap at rear and oil seal cap as well. They can be purchased used or new at 440source.com. According to 440 source these are the blocks to have, because they have the thick webbing in the bottom end like the Gen 2 hemis and also the thicker motor mount tabs. Only parts I have are the block and heads. Local pickup only. ((Valued at $250)) Trade for some small block performance parts. Edelbrock Air Gap intake, Edelbrock tunnel ram, good condition Holley 650-750 DP carb, what ya got? I am located in Oxford, Al.