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This site describes testing PCV valves to determine the best one for '50s chevy truck sixes:
https://devestechnet.com/Home/PCVInstall
Their experts say you want 1 - 3 inches of mercury suction from your valve. They describe measuring with a vacuum gauge in the dipstick tube. I think I'm getting around 3" because my needle starts around 2".
I'm using the CV727C valve specified by Norm Nock on P 98 of his Tech Talk book. This valve is for a 164 cu in Corvair.
Bob - I'd be curious how much vacuum yours is pulling through those small pipes.
https://devestechnet.com/Home/PCVInstall
Their experts say you want 1 - 3 inches of mercury suction from your valve. They describe measuring with a vacuum gauge in the dipstick tube. I think I'm getting around 3" because my needle starts around 2".
I'm using the CV727C valve specified by Norm Nock on P 98 of his Tech Talk book. This valve is for a 164 cu in Corvair.
Bob - I'd be curious how much vacuum yours is pulling through those small pipes.