No I don't have the number cause didn't think to do that at the time. I can't say for sure if forged or cast because it was 25 years ago last time I laid eyes on it but the block is part of a numbers matching car so I assume it is forged as were all 67 350 cranks.
I did not have any work done to the crank, it never left my garage. The only work I had done was to the double hump heads. I had a 3 angle valve job and had hardened seats installed. I also replaced the original flat tops with 9:1 pistons so it would run on 87 pump gas. I also installed a crane 290H fireball cam and a new double roller timing chain. I did not replace the cam bearings.
When I pulled it apart it everything looked stock, no aftermarket parts. The outside of the engine did not have any aftermarket parts either. Had original carb, intake and exhaust manifolds. I wouldn't think someone would go through the trouble of grinding down the crank mains and do nothing else to the engine, that makes no sense.
There is absolutely no reason to believe that a SJ350 was made other than lack of something in writing from GM(that still exists). It also makes sense that the first 350s were small journals, since it was based on the 327 block and the casting numbers were the same. In fact I would say it is 100% sure that the first 350's were small journal it just wasn't documented that they were put into production cars. But it was a first year car, a first year motor, they were making additions on fly and adding options through early 1967, I don't see how this is that hard to fathom. Clearly they rushed it to production because of the addition of the rear stab bar that came later.
I need someone to tell me what it would take to rewrite the history books. I am confident I have the real deal, I just need to know how to prove it and I would love to be the guy to do it.