Technical Pcv valves

Does anyone have the Delco part number for pcv valve on a Goodwrench crate? Gm doesn't list a specific number for the crate pcv. I put a fram on there when I put the engine in the car but at idle it rattles like a Chinese sewing machine opening and closing very fast, so I'm guessing it's the wrong weight spring in the valve as it should be closed under full manifold vacuum at idle? Also I'd like to get a 90 degree one this one is kinda funky pointing upright from the valve cover. Thanks!

 

ACDELCO CV774C {#06487779, 6487779} GM Original Equipment

Not sure what comes on the "crate" engine but this is the one I use

 

Okay I'll pick one up right now! Thanks for the reply. What size pcv hole is your valve cover?

 

I have no idea. I usually get a grommet when I get a valve...fit check at the store.

 

Will do thanks again

 

No problem!

 

I got mine at Summit, made sure it fit my grommet first, just a regular AC Delco for a '74 Chevy 350.

 

Is it a different part number than KJSR provided? That one says it fits a 1974 small block so I hope it'll fit my grommet if not I'll have to get the correct one

 

That one fits 74-97


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I took my PCV valve with me when I was shopping for the valve cover grommet, local Pep Boys has speed shop of sorts inside it... the plus is that I don't have to talk to a counter person.