I have 5 NOS Pcv valves new in the box part no# is CV 736 C or 6423695
Orig. 1969 Chevrolet, O.L. = 1.62"
stamped "AC SPARK PLUG", "TYPE CV-736C"
4 punch marks
"D" on bottom
The AC 746C was used for all 1968-69 L-88 and ZL-1 as well as 1970-72 LT-1.
The AC 736C was used for all 1969-72 except the above-referenced
30.00 EA shipped USA
[/img]