NOS 65 PCV valve on ebay that is not the same as the one in for sale section.

[s2ms]

I have 2  of what I believe to be assembly line (Hex style) PCV's marked

--- C5AE-6A666-B-C.S.CO.---   this is only marking.  Would you agree these are originals and

anyone know what C.S.CO. stands for?
Kurt.

Kurt,

Those are original, C.S. CO was the other valve manufacturer besides AC, don't know what C.S. CO. stand's for...

Dave

[Bob Gaines]

I have 2  of what I believe to be assembly line (Hex style) PCV's marked

--- C5AE-6A666-B-C.S.CO.---   this is only marking.  Would you agree these are originals and

anyone know what C.S.CO. stands for?
Kurt.

I have only seen the engineering number marked on PCV's that were used by Ford regardless of if sold over the parts counter as service parts or on Auto Parts store shelf's for the mass's. The parts counter PCV are in Ford boxes and the Auto Part store ones will be boxed in there OEM MFG marked box .In those cases it is typically the same PCV just different box.

[EdwardGT350]

cant upload photo of c6 version

[gt350hr]

  Bob's experience mirrors mine. I have found AC boxed parts with the C5AE number on them and others with only the AC part number. They are getting harder to find in NOS with the Ford part number on them.

[Bob Gaines]

Bob's experience mirrors mine. I have found AC boxed parts with the C5AE number on them and others with only the AC part number. They are getting harder to find in NOS with the Ford part number on them.

Are they $500 worth of hard to find?

https://www.ebay.com/itm/NOS-1965-66-Ford-Mustang-Shelby-K-Code-PCV-Valve-C5AZ-6A666-A1-RARE-EARLY-TYPE/152778570941?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

They typically sell for less. I haven't seen one sell for that much but who knows. 

[gt350hr]

 There is another variant not mentioned yet. I looked at my "assembly line" valve on my original engine last night. It has a .020 wide "v notch" cut into the "points" of the hex area half way up the hex. None of my other ones have it but I have seen others like it. Not stirring the pot just noting a difference.
    Randy

[J_Speegle]

There is another variant not mentioned yet. I looked at my "assembly line" valve on my original engine last night. It has a .020 wide "v notch" cut into the "points" of the hex area half way up the hex.

Like this one/style?  Forms sort of a "diamond? look on the finished product Have seen that style many times




Picture from a magazine article. Can't tell the version/style but IMHO something caught the sunlight just right part way up the side of the PCV




Service replacement example/part



Don't know if its the cutting depth, tip of the cutting tool or angle while looking at it without having them in hand next to one another.  Have pictures with this cuts into the hex area through 67 versions  but each looks similar but different in ways

Could post but not sure it it would help

[Bob Gaines]

There is another variant not mentioned yet. I looked at my "assembly line" valve on my original engine last night. It has a .020 wide "v notch" cut into the "points" of the hex area half way up the hex.

Like this one/style?  Forms sort of a "diamond? look on the finished product Have seen that style many times






Service replacement example/part



Don't know if its the cutting depth, tip of the cutting tool or angle while looking at it without having them in hand next to one another.  Have pictures with this cuts into the hex area through 67 versions  but each looks similar but different in ways

Could post but not sure it it would help

Just so no one gets the wrong idea although these pictures are excellent examples of the detail being discussed the picture parts are for the earlier style PCV that screws into the brass fitting it is not a replacement for any year GT350.   

[s2ms]

There is another variant not mentioned yet. I looked at my "assembly line" valve on my original engine last night. It has a .020 wide "v notch" cut into the "points" of the hex area half way up the hex. None of my other ones have it but I have seen others like it. Not stirring the pot just noting a difference.
    Randy

Randy,

That is the C.S.CO version mentioned previously. Looks similar to Jeff's pics but has the non-threaded hose connection.

Dave

[Silver Bullitt]

FWIW, my C5 hex (no thread) assembly line original does not have the vertical "XXXXX" markings like the AC I recently saw for sale.

[67350#1242]

I have another C5 Hex with SSC in a segmented circle in the manufacturers spot - also has the splits on the points.

[gt350hr]

     Bob ,
      Mine has the non threaded , regular "nipple top".  I believe Jeff posted his pic to verify the "notches" I spoke of. I also have several like the one in Jeff's pic as they were used on 390 and 428 engines.
     Randy

[Bob Gaines]

     Bob ,
      Mine has the non threaded , regular "nipple top".  I believe Jeff posted his pic to verify the "notches" I spoke of. I also have several like the one in Jeff's pic as they were used on 390 and 428 engines.
     Randy

That is exactly why Jeff posted it. I was clarifying so someone didn't confuse the  C4 threaded 289 pcv valve style with the nipple version. The hex C4 threaded style is a 20-40.00 piece on a good day. The Hex C5 nipple version sells for many times that amount. 

[gt350hr]

 More stuff for the totes headed to the swap meet at SAAC 43!
     Randy

[s2ms]

I have another C5 Hex with SSC in a segmented circle in the manufacturers spot - also has the splits on the points.

I had forgotten about that version which appears almost identical to the C5AE C.S.CO version, including the tick marks on the hex points. Thanks for reminding me.

Dave