[Rich Biebel]

I worked in an engine/machine shop back in the 1980-1990 era

That's about when the .015" added crank stroke spec came along.

We used a real popular crank shop about an hour away and the guy who did the cranks was very well known and had a ton of experience going all the way to famous shops in California.

We did a ton of work for a real well known shop in NJ.....we also picked up cranks from them and they went to the same crank grinder.
We were just passing them along....

A 454 crank was done for a SS car and it got DQ'ed at Indy for being over the .015" limit after a class win.....

The engine builder never caught it.....he was not happy....the car owner was really not happy.....

I remember the flack after that one......

Stuff happens.....