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Old 10-15-2025, 05:14 PM
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Would you consider using 3917531/32 Adapter-Exhaust Manif. To Exh. Pipe-L.H./R.H?
It’s listed in AIM UPC O C1.5. I’m sure it would have to be fabricated.

This is what I believe it looks like.
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Old 10-15-2025, 09:39 PM
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I've heard of this kit but had never seen one, thank you for posting. I found this reference in the AIM shipping manifest. The first part number referenced below if for the instruction sheet.
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Last edited by juliosz; 10-15-2025 at 09:45 PM.
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Old 10-15-2025, 11:04 PM
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Damn !! those are cool adapters, if a person could find them on a shelf somewhere.
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Old 10-18-2025, 07:00 PM
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You’re welcome Paul.
The adapter pic came from Jon’s Headers post at the CRG. The installation kit was part of the Dick Lewis header package which preceded the LC headers.

The other photo showing the adapters installed is of the survivor 67 Mountain Green Z28 now owned by Chris P.

I too have a Gardner deep tone exhaust and LC headers to install on my car and will have adapters fabricated for the transition.

Looking forward to the rest of your build thread. Your car is one of my favorites!

Last edited by TerryD; 10-18-2025 at 09:41 PM. Reason: Spelling
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Old 11-10-2025, 07:22 PM
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Quote:
Originally Posted by SMS View Post
This is Chick's Z with Garner and headers.
Just wanted to comment that I did have to use a friends tube bender to slightly bend both tubes so they would match perfectly with the original type 68 repro exhaust headers. Was not a lot but again they had to be tweaked, After final fit up approval we had a local shop place the ends of each exhaust tube due to cones being welded on a layer of protection, clear zinc. Matched perfectly and to this day looks clean and fresh looking.
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Old 11-10-2025, 09:00 PM
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Quote:
Originally Posted by 68camaroz28 View Post
Just wanted to comment that I did have to use a friends tube bender to slightly bend both tubes so they would match perfectly with the original type 68 repro exhaust headers. Was not a lot but again they had to be tweaked, After final fit up approval we had a local shop place the ends of each exhaust tube due to cones being welded on a layer of protection, clear zinc. Matched perfectly and to this day looks clean and fresh looking.
I'm assuming your headers are the Kustom design. Since mine are the Bill Thomas design, I wonder if your collectors fall closer to the stock pipe location than mine. Once we got a good look we realized even re-bending the head pipe we still would not have a straight shot to the collector. We opted to cut the head pipes back a little further and have Eric G bend us some new pieces which worked-out great. Here's where he's at as of today:
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Old 11-10-2025, 10:37 PM
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Work of art!!
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Old 11-11-2025, 02:21 AM
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Paul, I had Douglass style 4-bolt round flanges made some years back if you prefer that style over the 3-bolt style. I have extras.
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Old 11-11-2025, 12:25 PM
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Quote:
Originally Posted by 1967Z28 View Post
Paul, I had Douglass style 4-bolt round flanges made some years back if you prefer that style over the 3-bolt style. I have extras.
Thank you, Jon.....appreciate the offer but the collector side flanges are already welded.
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Old 11-11-2025, 03:49 PM
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This is the first example I’ve seen of collector flanges installed on reproduction 67 Z-28 headers and I’m wondering if this is due to the production date of your car and the availability of the 2nd design Douglass Headers?

I hadn’t considered installing collector flanges on the headers for my 06E car but will now.

Your exhaust installation looks great!
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