Hey, Marlin: Is
THIS your card?! [img]/ubbthreads/images/graemlins/naughty.gif[/img]
Sam: that cam card above is for the Crane blueprinted LT-1 cam, and became GM's replacement (service) cam after the
3849346 cam was discontinued in December of '71 (info via NCRS). So, it was essentially GM who "standardized" the cams before Crane ever came along. But, don't worry, they have PLENTY of different blueprint grinds for everyone!