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: 350 block and head decodin.. 69chevellesupersport Jul 21st, 09, 5:42 PM Hey guys a found a small block think its a 350 here's the numbers. Driver side rear castings 3970010 Passenger side beside where head is. V071cky Mike Jul 21st, 09, 5:47 PM Could be any of these 3: CKY 72 350 Corvette 255 LT-1 4-spd 4-Brl Holley, Hp Solid Cam CKY 73 350 Camaro 145 L-65 Manual 2-Brl A.I.R. CKY 76 350 Nova 165 LM-1 TH 350 4-Brl Get the block casting date http://www.yearone.com/updatedsinglepages/Id_info/gm_engine_id/gmidimages/endinedetail1.jpg | ||