I have several pcv valves type AC 736 for my '71 LS5. I know the judges look for the AC spark plug and the only "four" dents at the base of the early ones. I have looked at two in particular and noticed the D in the bottom of the valve have a different font. The earlier one has a larger, fat type D and the newer type have a thinner D. Is this considered when judging? I have posted pics to help clarify my question. The small box on
the right is from the older valve with the larger D.
Thanks, Ken
the right is from the older valve with the larger D.
Thanks, Ken