Do believe your correct there Dave, come to think of it I have seen the mechanical locks on the flywheel bolts. They were made for pairs of bolts, in fact now that ya all got me thinkin' bout it, I remember selling them when I was a Chevy parts man half a century ago. I don't think they were used on all engines though. But that sounds like the best solution to me.
Denny Graham
Sandwich, IL
