I have mostly Pontiac but 3 olds in my stable, a 1976 circle track Cutlass S a 1984 Cutlass Supreme rock stocker and a 1993 Acheiva. the 1976 I need a nose for (442 style) the 1984 Im building a 1977 350 Olds engine to swap in with Mondello motor mounts and the Acheiva needs the quad4 rebuilt .... really I just wanted to try pulling a sideways motor and reinstalling one time. Actually all nice looking cars ... my circle tracker has a few dents
I just bought a crankshaft mail order(Ebay) and I think it is an olds crank. Its forged 2.5 mains 2.12 rods and appears to be 3.25 or 3.385 stroke from the best I can measure, thrust is on #3. Front and rear rod journals have thru-holes that arent cetered about 3/4 " in diameter and no numbers. Also has a C-shaped notch in hub that looks like an octagon with 1/3 cut off.

 

Welcome!
Your circle tracker should have some dents shouldn't it? I've never watched a race where at least two cars bumped once. Hope you get your technical questions answered. Lots of good Olds knowledge here.