Engine - Block Components - Bare Block 502

From GM Performance - This Gen VI cast iron block is a strong foundation for a big block engine project. The short deck block was designed to meet the needs of a powerful and dependable 500cid engine for street or boat usage. The blocks cylinder walls are siamesed and are bored to 4.47. The deck surfaces are reinforced to improve the head gasket sealing. Four bolt main bearing caps are installed to reinforce cylinder barrels and add strength to the bottom end. Technical Notes: The distance from the crankshaft centerline to the deck surfaces is 9.80 inch. It is used on 502 engines assembly, and partial engine. and can use roller tappet or standard tappet. Casting P/N 10237300. Maximum over bore is 4.500 inch.