Casting Number #3970010, w/ Engine Code #V033TYZ and Partial VIN K6A142956 = 350 cu. in. w/ 4 bolt mains build date 1975 w/165 hp. Cam is supposed to be a 327/350 HP w/ high volume oil pump. Heads are casting #333882 with 1.94/1.50 valves. 1.6 ratio rocker arms (stock is 1.5). Shipping TBD.