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Discussion Starter · #1 ·
Are c9za-5c203-d and c9za-5c262-f stainless exhaust tips correct for a '67 390 GT/GTA? Or are they only for 69-70 428 CJ cars?
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Are c9za-5c203-d and c9za-5c262-f stainless exhaust tips correct for a '67 390 GT/GTA? Or are they only for 69-70 428 CJ cars?
Haven't looked up those specific part numbers, but split quad design/type exhaust outlets were standard equipment for all '67-69 GT's (and the '69 Mach 1), but not for 1970 when they changed to a single wide oval trumpet style. I've read that originals are extremely rare, and repops, although similar, are not of the same exact configuration. I think former VMF member Petesponies makes and sells some that are very like original. The difference has something to do with the weld joinings and how parallel the tips are to each other.
 

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According to the Ford MPC the stamped part number (C9ZA-5C203) crosses over to part number C9ZZ-5255-D. That part was used on used on the 1969 Boss 302 and a 302 w/dual exhaust. It was also used on the 1969 and 1970 428CJ and 429 Boss exhaust. This tip should measure 22-5/8 x 2-1/8 and 2-1/4.

The correct part number exhaust tip for a 1967 S code is C9ZZ-5255-C and the stamped number would be C7ZA-5C262-H. This tip should measure 11-3/16 x 2

If those are NOS tips someone restoring a Boss may like to buy them. The dual tips look to be correct for a 67, if you can make them work, I would use them. Just as an un-related side note the 1968 428 CJ tips were welded to the pipe coming out of the transvers muffler.
 

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Discussion Starter · #4 ·
The dual tips look to be correct for a 67, if you can make them work, I would use them.
This is my thought too. The stainless tips, not the exhaust pipe attached to them, look correct for my application. I was told they were cut off a '69 Mach 1 428 CJ that came from the muffler. I am considering trying to re-work the exhaust pipe on these tips to slip in the tailpipe or just weld new correctly shaped pipe to the stainless tips for use on my '67 GTA.
 

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Discussion Starter · #6 ·
Fuller's reproduction tips include the tailpipe section from which these original tips were cut, and yes they do differ from the '67 GT. However, the stainless tip portion seems the same.

I'd have to recreate the correct tailpipe section of the '67 version if I use the tips I shared. The circled section in the photo below is what I'd need to make & weld to these stainless tips to be "correct" for my application.
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If you are going for a concurs build the tips extension pipe would be clamped to the exhaust pipe.
 

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Discussion Starter · #9 ·
If you are going for a concurs build the tips extension pipe would be clamped to the exhaust pipe.
Correct. I wasn't suggesting welding where it is supposed to clamp. Rather, I'd need to re-make the clamped on portion of pipe (cutting off the stainless & welding a newly fabricated clampable piece to the stainless).

@Sunlit68 - Off topic, but Pete was banned due to his bad behavior.
 

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The correct part number exhaust tip for a 1967 S code is C9ZZ-5255-C and the stamped number would be C7ZA-5C262-H. This tip should measure 11-3/16 x 2
The Part Number you noted is incorrect. The correct Part Number for a 1967 S Code Dual Tip Exhaust Extension is C7ZZ-5255-A. The C9ZZ actually replaced the C7ZZ in the early 70's. You must be looking at the 1965-72 MPC, which was printed in 1975, which was after the C7ZZ had been replaced. Unfortunately, this happens all too often, which is why it is best to get MPC's thast are as close to the year for which you are researching. In this case, the 1960-68 MPC would be better in giving you a better Factory used Part Number.

Bob
 

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Original Ford tips were not stainless. They were chrome plated mild steel. In regular use they rusted as quickly as the rest of the car.
 

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Discussion Starter · #13 ·

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'67-'68 were stainless.

Well there you go....quoting from the internet. :)

They were not stainless.
'67-'68 were stainless.

Just like the leather seats our early Mustangs have? :)
 
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