The engine arrived today. To my surprise, the 974 heads already have 2.02 valves and what looks to possibly be a three angle valve job. The springs are 1 3/16th wide and 2 3/16th tall(without load ). It also looks like the engines been decked. The crankshaft is stock with casting numbers 3418640 with a Big “X” on one side and CFD(GM factory) on the other and stamped with M10 R10, which I believe is the stamp for it getting machined .10. One of the journals has a scratch that is very small, but kind of deep, but otherwise very smooth. It came with two cams, one is from the engine and the other is a BB cam, I believe. It also cam with what looks to be the stock stamped rocker assemblies and distributor.
I think it’s a score, overall. The scratch on the crankshaft gives me concern because it’s already been turned... Oh well, you can’t win them all. Now I need to get it all to a machine shop for a professional assessment.