Topic: 67 GT350 PCV

[Bossbill]

This thread, where I link to the specific post in question, talks about 65/66 Hi-Po PCVs
http://www.concoursmustang.com/forum/index.php?topic=10300.msg61338#msg61338

My 67 GT350 has an AC PCV with the C5AE-6A666-A part number stamped on it. Identical to the one in the picture linked above. It has a circlip so you can take it apart.

The MPC is rather nebulous on applicability. What is correct?

[67gta289]

The 67 (one year) MPC (Jan 67 version) lists C5AZ-6A666-A, stamped as C5AE-6A666-A or B

The 60-68 says that the C6AZ-6A666-A replaced the C5AZ-6A666-A in Sept of 67.

So yes, a bit nebulous. 

I did not see anything in Mannel's book.

[jwc66k]

My 67 GT350 has an AC PCV with the C5AE-6A666-A part number stamped on it. Identical to the one in the picture linked above. It has a circlip so you can take it apart.
The MPC is rather nebulous on applicability. What is correct?

The 60-68 Ford Car Parts (aka MPC) says it is marked "C5AE-6A666-A", or "C7AE-6A666-A or -C", both replaced by "C6AZ-6A666-A" in 9/67. "C6AZ-6A666-A" does not have a referenced marking. In the 67 Engine Manual, p/n "C5AE-6A666-A or -C" is referenced for all 289 2V and 4V engines and 289 GT-350 with dual quads. If you want more info, you should get a copy.
Jim

[Bossbill]

To be honest I think I screwed up and went up instead of down in the MPC and ended up in the wrong engine section.

I concur with Jim's last assessment and it shows the the C5AE as being correct.

It looks like I have the right one. For others watching (and to redeem myself a bit) here is a closeup up the markings.

[J_Speegle]

Though it doesn't help with the part number at least the period picture helps confirm the design and the basic look/finish

[Bossbill]

Thanks Jeff. It is indeed the hex style, like I currently have.

The main reason I asked is that Shelbys are notorious for doing odd things. Although the engine is a 289 HiPo, the intake and valve covers are unique.

Just to help others if they find this post I'll offer up other details concerning this part.

The Osborne Engine Assy Manual references C5AE-6A666-A or -B as an assy line part. The engine referenced is any 289.

What follows is SBF specific.
Mannel in the 1964 section 4F6-b starts describing a bunch a C4 PCV valves and states that "a service replacement PCV valve became available for all previous 1964 valves. It carried the stamped number C7AE-6A666-B."

His 1965 section notes the use of ... "C5AE-6A666. Other possible numbers include C5AE-6A666-B and C5AE-6A666-C." He then mentions the C7AE valve again as a "1967 service replacement."

His 1966 entry 6F6 notes the use of the "C6AE-6A666-B1 and C6AE-6A666-B2.
Both of these are round in circumference and not hexagonal.

There is no 1967 entry in the 7K (or other) series for the PCV. Odd.

TSBs round things out with a 7/1/64 #9B and notes that a "Jiggle pin PCV valve was C1AZ-6A666-A for 62/63 and C5ZZ-6A666-A for 1964."

This was amended (I think) in a Mercury TSB #12 12/4/67 to say "The correct PCV valve part number for all 1965/68 289 and 302 V8s was stated as C5AZ-6A666-A".

[Bob Gaines]

On 67 GT350's I  have seen The C5 marked 65 hex style PCV on early cars and the C6 round style marked PCV on later production and a few of the C7 marked PCV on later production cars . Most of the C7 PCV's I have encountered were on 68 GT350's. With that said I have not deducted in concours for ether style .

[Bossbill]

Thanks, Bob.