I showed a V100 PCV valve to him Pete, looks to be the interchange for this NAPA piece but they work backwards. It screws into the vacuum source whereas the L79 screws into the oil filler tube (crankcase). His needs to have the vacuum hose attach to the hose nipple side and all the ones out there seem to have the threaded side attached to the vacuum.
beaumontguru said
Dec 2, 2020
Ya they are unique. And current changeup listings are not right at all!!!
65 SD L79 said
Dec 2, 2020
see them on ebay, not cheap
DonSSDD said
Dec 2, 2020
So the one on a 63 V8 that screws into the carb base are backwards to this one?
Anybody got one. its the screw in type AC delco CV726C, GM number is 6422721.
-- Edited by beaumontguru on Wednesday 2nd of December 2020 09:01:01 AM
In stock at Napa. Part 29255 napa line
-- Edited by pontiax on Wednesday 2nd of December 2020 10:21:33 AM
see them on ebay, not cheap