had two blocks one was a 1975 the other is a 1976 both came in with the numbers solidly in the .310-.320 range had a spot here and there that was in the mid 200 range worse being 245, and a couple around .260-.280,,95% are .300 or better.
I think I would be questioning the measuring equipment.
Chris.
Yea Been there done that. I told Bill before hand that what he would get. I think take .100 off them numbers would be closer.
Even if I did reduce the numbers by .100 both block's are good ones.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
