Billy hit the nail on the head, strokers seem to be forgiving. The iron head 493 in my Belv runs about the same shifting anywhere from 55-6500. I do find myself short shifting by ear/feel though.
Faster, Faster until the thrill of speed overcomes the fear of death...
71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater