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3970010, What block do I have??Chris`s85Z28 11-18-2004, 04:22 PM I have a 350 4 bolt main that being turned into a 383 I was just wonderin if I could find more stuff out about this Block, the number off the back Lh side is 3970010, i don`t know the nuber up front since the block was 0 decked. 86camedcamro 11-18-2004, 04:31 PM 3970010....302.....69....4...Z-28 Camaro 3970010....327.....69....2...Trucks and industrial 3970010....350...69-80...2 or 4 one of them its prob the 350 Stephen 87 IROC 11-18-2004, 11:50 PM Since you don't have the engine code because the block has been decked, the simplest answer is; 4" bore SBC block. Not always, but usually a high nickle block. Can be 2 or 4 bolt mains. One of the most popular castings for building 302, 327, 350 or 383 engines which all use the basic 4" bore. | ||