Chambered Exhaust for 1969 Camaro
 

<span style="font-size: 14pt">Need a good, used original or NOS chambered exhaust system for a 1969 Z/28 including hangers and hardware. Prefer a complete system however will consider partial or incomplete as well. Not looking for a Gardner or other reproduction system. Please PM with details.</span>

http://i1187.photobucket.com/albums/...psc8810b26.jpg

Re: Chambered Exhaust for 1969 Camaro
 

There is One and only One reproduction Chambered system worth considering .... the offering by
Al Colvin ....C &amp; C Reproductions circa 1987-90. Although these are done in S/S , They were off the Original GM Blue prints issued to 2 suppliers. One of which was WALKER EXHAUST.
These C &amp; C Components were nearly undetectable other than the material ... I'm not sure how many sets were made. He built both BB &amp; SB set ups with the head pipes being the only difference. The hardware and hangers were spot on too...
Myself and a friend were original investors and we each got the first sets available... mine for a SB Z/28 , his for a BB YENKO . (mine is still with me, under the car,,,, never been fired up yet)

maybe someone has a set mothballed ....
Tom

Re: Chambered Exhaust for 1969 Camaro
 

I have a good used set of chrome tip pipes gm off a chambered exhaust imagine have some of the other parts also

Re: Chambered Exhaust for 1969 Camaro
 

i have an NOS 69Z exh complete -

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: enio45</div><div class="ubbcode-body">i have an NOS 69Z exh complete - </div></div>

Should we take extra blood pressure pills before you tell us the price?
HAA, LOL!

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jl8z28</div><div class="ubbcode-body">I have a good used set of chrome tip pipes gm off a chambered exhaust imagine have some of the other parts also </div></div>

I don't believe any factory installed chambered exhaust system (NC8) had chrome tips. Don't know about service replacements however. Are the pick tags attached? Please PM with details of other related parts.

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: [email protected]</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: enio45</div><div class="ubbcode-body">i have an NOS 69Z exh complete - </div></div>

Should we take extra blood pressure pills before you tell us the price?
HAA, LOL!
</div></div>

Eddie's is the transverse muffler style exhaust rather than the chambered system I'm looking for. Here is the link to the classifed posting:

https://www.yenko.net/ubbthreads/ubbthrea...stem#Post535942

Re: Chambered Exhaust for 1969 Camaro
 

The C&amp;C chambered systems did have the CC logo stamped on the hangers so it is easy to verify they are not GM.

Re: Chambered Exhaust for 1969 Camaro
 

LLoyd, Not much here but I do have the original rear muffler hanger bracket to frame rail bolts. Hard to find rust free originals. Rich.

Re: Chambered Exhaust for 1969 Camaro
 

Hmmm, well that is a start :-)

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: camaromb</div><div class="ubbcode-body">The C&amp;C chambered systems did have the CC logo stamped on the hangers so it is easy to verify they are not GM. </div></div>i have one of the original C&amp;C systems in my car. It will be coming out when I start the restoration. And yes, it does say C&amp;C on the hangers. I guess I was one of the original investors also, as I got the system for half price ($400?).

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: camaromb</div><div class="ubbcode-body">The C&amp;C chambered systems did have the CC logo stamped on the hangers so it is easy to verify they are not GM.</div></div>

yes, stamped small inside hanger.
(SS also)
The pipes are not stamped.
NC8 Tailpipes were natural steel w/ aluminized coating.
Later production standard exhaust and even later ones with resonators.... Z's had Chrome Tip tail pipes, some made by Walker and were actually 2 PC welded beyond first bend around the spring . .approximately 2/3 of the pipe was &quot;flash chromed&quot;. single dip just like air cleaner lids , oil caps, wing nuts etc.

Re: Chambered Exhaust for 1969 Camaro
 

I have reason to believe the system changed slightly after January, the change noted in the assembly manual has to do with the 2 chambered pipes which run parallel to and aft of the rear axle. The original schematic (illustrated under L34-35 section in AIM) shows each chambered section with 2 tabs welded on them and then the tabs bolted together.

The NC8 section in the AIM shows the elimination of the nut, bolt, and lock washer.

It would allow the two sides to move independently of one another, which IMHO is not at all detrimental.

Has this change been noted on any actual production vehicles?

Re: Chambered Exhaust for 1969 Camaro
 

Not to take over this thread, but what is the latest date a Z/28 could have Chambered Exhaust?

Re: Chambered Exhaust for 1969 Camaro
 

I think there's a technical bulletin that references May 19th as when it was no longer in production for the Camaro. I believe there is a documented July built L78 Chevelle with chambered exhaust listed.

Re: Chambered Exhaust for 1969 Camaro
 

Good info to know. Any way to tell if a car was an original chambered car?

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: turbojet427</div><div class="ubbcode-body">Good info to know. Any way to tell if a car was an original chambered car? </div></div>

If your Camaro is an L78, L34 or Z28 the chambered exhaust came standard up until the end of November. After November it was optional until May 19th when it was deleted from production. The chambered system utilized the same mounting locations as the transverse system so if it was built after November you'd need factory documentation or dealer invoice.

Re: Chambered Exhaust for 1969 Camaro
 

Thanks

Re: Chambered Exhaust for 1969 Camaro
 

The recall letter sent out for a California built and sold Z28 states 1969 Camaros with engine options L34, L78, and Z28's built before December 4, 1968 received chambered exhaust and 1969 Camaros equipped with engine option Z28 built from December 4th 1968 through May 2nd 1969 incorporated a regular muffler dual exhaust without resonators.

https://lh5.googleusercontent.com/-7...all_letter.jpg

<span style="font-weight: bold">HOW to determine whether the car was equipped with NC8 chambered</span>

There really are not fail safe ways however if the car hasn't been restored and if any part of the original intermediate hangers (over the axle) are still on the car the Chambered Hangers are entirely different than the standard exhaust (whether std duals are equipped with or with out resonators.) The chambered hangers are attached with one bolt instead of two and they have a 1&quot; x 2&quot; metal retainer with a tab which goes between the bolt and the rubber strap (the rubber strap is much shorter and narrower)


Here is an original retainer, this one was installed upside down from the factory as evidenced by the Hex shape of non-rusted metal around the bolt hole.

https://lh4.googleusercontent.com/-k...r_retainer.jpg

Re: Chambered Exhaust for 1969 Camaro
 

This has probably been discussed before, so...what is the last date that chambered has been documented on a Camaro built for US delivery? I have a May '69 Pace car with chambered shown on the Canadian docs. I believe that there are quite a few Canadian delivered cars with the chambered system in the first half of the '69 calendar year.

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: firstgenaddict</div><div class="ubbcode-body">The recall letter sent out for a California built and sold Z28 states 1969 Camaros with engine options L34, L78, and Z28's built before December 4, 1968 received chambered exhaust and 1969 Camaros equipped with engine option Z28 built from December 4th 1968 through May 2nd 1969 incorporated a regular muffler dual exhaust without resonators.

https://lh5.googleusercontent.com/-7...all_letter.jpg

<span style="font-weight: bold">HOW to determine whether the car was equipped with NC8 chambered</span>

There really are not fail safe ways however if the car hasn't been restored and if any part of the original intermediate hangers (over the axle) are still on the car the Chambered Hangers are entirely different than the standard exhaust (whether std duals are equipped with or with out resonators.) The chambered hangers are attached with one bolt instead of two and they have a 1&quot; x 2&quot; metal retainer with a tab which goes between the bolt and the rubber strap (the rubber strap is much shorter and narrower)


Here is an original retainer, this one was installed upside down from the factory as evidenced by the Hex shape of non-rusted metal around the bolt hole.

https://lh4.googleusercontent.com/-k...r_retainer.jpg </div></div>

When I purchased my L34 Camaro in the 90's the conventional thinking was the chambered exhaust was only standard on solid lifter engines. My L34 had a transverse system installed using the the original chambered hangers and hardware. It didn't fit to well. That's how I confirmed the car originally had chambered. This was also confirmed by the original owner who said he changed out the chambered because it was too loud. I do have an assembly line used system for that car but a gardner system is on it now.

James the question I have is; did the same noise issue apply to the Chevelle chambered system. I have a copy of a build sheet that list that option on a July of 69 built Chevelle.

Re: Chambered Exhaust for 1969 Camaro
 

Yes it did,but on L-34,L-78 &amp; L-89 equipped Chevelles.
TSB dates were not strictly enforced from what I've seen.

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Mr70</div><div class="ubbcode-body">Yes it did,but on L-34,L-78 &amp; L-89 equipped Chevelles.
TSB dates were not strictly enforced from what I've seen. </div></div>

Thanks Rick. Now let's see if there are any documented June or later built Camaros with chambered.

Re: Chambered Exhaust for 1969 Camaro
 

The latest I have seen with paper is early may. I believe there is one in Jerry's book.

Steve,
When reading the letter it doesn't specifically state that the chambered NC8 system was discontinued, only the date Chambered was dropped as standard and the date the std dual was discontinued and the std duals had resonators added.

Re: Chambered Exhaust for 1969 Camaro
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Day2_69Z</div><div class="ubbcode-body">There is One and only One reproduction Chambered system worth considering .... the offering by
Al Colvin ....C &amp; C Reproductions circa 1987-90. Although these are done in S/S , They were off the Original GM Blue prints issued to 2 suppliers. One of which was WALKER EXHAUST.
These C &amp; C Components were nearly undetectable other than the material ... I'm not sure how many sets were made. He built both BB &amp; SB set ups with the head pipes being the only difference. The hardware and hangers were spot on too...
Myself and a friend were original investors and we each got the first sets available... mine for a SB Z/28 , his for a BB YENKO . (mine is still with me, under the car,,,, never been fired up yet)

maybe someone has a set mothballed ....
Tom</div></div>

Update , The system discussed here, has been sold for use on a very deserving 69 Z/28.......
Price was north of $4,000 for those who asked and inquired.

Thanks to all with info and input in getting the facts aligned.