I've been checking the codes on the engine in my 76 Vette and this is what I found.
Block code: 39700010 69-79 302/350 2 or 4 bolt mains
Head code: 333882 350/400 70/80 1.94/1.50 76 cc's
Suffix code on block: V1001KX
I can't find any information on the suffix code. Tech, DennyW and I figure it's a rebuilder's code.
Can anybody offer more info?