283 220 hp pcv

[Douglas C.]

Question, is correct PCV cv590c or cv609c.

And is there a cross reference for a non nos replacement.

Tks. DRC

[Duke W.]

I can't answer your question directly, but if you have an original '61 283/220 that was sold new in California it would had to have the RPO that included a PCV system. I cannot find the number in my old NCRS Spec Guide, but 242 is stuck in my head. Check the AIM, and here's a thread that might help. I just found it with a Web search - "RPO 242".

https://www.corvetteforum.com/forums...pcv-valve.html

Duke

[Joe L.]

Question, is correct PCV cv590c or cv609c.

And is there a cross reference for a non nos replacement.

Tks. DRC

Douglas-----

The original PCV valve for your application was GM #5646366, aka AC CV-276. It was discontinued in March, 1966 and replaced by GM #6421787, aka AC 695C. The latter was discontinued without supercession in May, 1981. I know of no current aftermarket valve for the application but it is possible that one exists.

The CV-590C was used on 1963 Corvettes and is the same general configuration as the above-referenced (i.e. threaded on one end and a nipple on the other end) but I have no idea if it would be a correct functional replacement. GM strongly implies it would not (since it was never supercessive to the original). The CV-609C is a different configuration (differing size nipples on either end) .

[Douglas C.]

Thanks guys. As I can find NOS both 590C and 609C on Ebay but I prefer the 590C threaded connection to back of carburetor I'll use 590C.

Although not exactly correct at least it's an original factory component with proper function.

Tks. Doug

[Joe L.]

Thanks guys. As I can find NOS both 590C and 609C on Ebay but I prefer the 590C threaded connection to back of carburetor I'll use 590C.

Although not exactly correct at least it's an original factory component with proper function.

Tks. Doug

Doug------


Why don't you get this valve on eBay? This is the valve that replaced the original valve as I mentioned in my last post. Plus, it's reasonably priced. Don't pay any attention to the fact that it mentions some non-Chevrolet applications. It's the part number that counts and it has a part number that GM says is right for you.

https://www.ebay.com/itm/275419500709?_skw=6421787&itmmeta=01JQT23AMYQCS94JF5FJFDZP51&hash=item40204810a5:g:cxsAAOSwwB1i9Sdt&itmprp=enc%3AAQAKAAAA4FkggFvd1GGDu0w3yXCmi1fKpllSzlbwUAK4GC4h3PUCZxgBeLLADhoyMi%2BseaOBRdVhFu4qn4g8y9Oy6Uy%2B6%2FO8ahWIGXD0f%2BFqXalhRPFp8ptT3Zd7AbF8q3aL8cIFncTS45n7CEnWGj2WKmAdXxSaTI4Jukxgouq%2BV%2Fhcm4DU2fmuDtC00QpnFME9RwpR2ciVw74k%2B2TVc229ywOYoeQ%2BmuYPVkK8cB9AoliT0MO7hvQpV%2B2zsLDwxpDoOTq6tzcCQUhsCFAVceojG60ycFbwv6Fzoh2wFTTmxHUFbN0z%7Ctkp%3ABFBMyqqNwr5l

[Gary B.]

Doug,

Or if you’re dead set on the original valve, then I think this is the original part for 3x the cost of what Joe recommended:

eBay item number:405017378624

Gary

[Douglas C.]

Doug------


Why don't you get this valve on eBay? This is the valve that replaced the original valve as I mentioned in my last post. Plus, it's reasonably priced. Don't pay any attention to the fact that it mentions some non-Chevrolet applications. It's the part number that counts and it has a part number that GM says is right for you.

https://www.ebay.com/itm/27541950070...3ABFBMyqqNwr5l

Thanks. Good information I was not aware of.

Doug

[Joe L.]

I finally dug these out. The CV 276 is the original valve. The CV 695C is the replacement which is also now long-since discontinued as I previously described. [none for sale]