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cdr/pcv valve

Bigwill75

New member
3
6
3
Location
North Pole Alaska
Hey guy decided to join because I found a lot of great info on here. Concerning the cdr valve, you need that. It regulates how much crankcase pressure you have. You do need some but not too much. Anyway gm still makes this valve even though they will say there all discontinued. The old number 25042443 I believe it was is discontinued but 25042462 is a good part number for that truck, it just doesn’t pull up on there computer. You can also order it yourself using that number at gm parts direct. I also seen a guy asking about the hose off the bottom of the cdr valve and I don’t think he ever got an answer. I was looking for one myself. I couldn’t find anything that would work so I built one out of copper last night and will be putting it on tonight. If I have any problems with it I’ll do a reply to let you now. See picture for the f hose I built for the bottom hose.
 

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ssdvc

Well-known member
971
639
93
Location
CT
I like the solution and thanks for the part number. How do you plan to connect that up to the CDR and the right and left side pipes?
 

Bigwill75

New member
3
6
3
Location
North Pole Alaska
I like the solution and thanks for the part number. How do you plan to connect that up to the CDR and the right and left side pipes?
3/4” and 1” hose just to make a butt connector with some hose clamps. I think that should hold up, I have no idea how much pressure there could be. Worst case I blow a hose off at one of the connectors and try flaring the ends of the copper pipe
 
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