NC8 - Chambered Exhaust

**Mr70** · #1 10-09-2001, 04:43 PM

I have a Chevrolet Technical Service Bulletin #69-T-8 issued Dec.1968.
It states that on November 25 1968 the NC8 Chambered Exhaust system was no longer Standard equipment on Camaro SS & Z-28 and Chevelle SS,but was now optional,due to the excessive noise levels deemed by some local police depts.
It goes on to say the RPO NC8 will still be available as optional equipmentin those areas where the system is permissible.
So I believe this to mean it was possible to get it optionally,depending on where in the country you lived.
But when I open up my 1970 Assembly Manual,it says that RPO#NC8 is cancelled for good for the Chevelle as of May 19, 1969.
This adds confusion as to why the 2 later Chevelles stated early recieved it so late in production.

**YENKO DEUCE REGISTRY** · #2 10-09-2001, 07:12 PM

Thanks for the info! I thought that the option was completely cancelled in 12/68, but now I see that it just became an option.

I'm trying to do some digging on this '69 Chevelle, only because it has some neat options - like special paint.
Thanks,
M

JoeC · #3 10-10-2001, 01:40 AM

I have seen the NC8 on more then one build sheet on Chevelles built in June/July.

Keith Tedford · #4 10-12-2001, 05:49 AM

I also have GM of Canada info on a June or July COPO Chevelle with the NC8 chambered exhaust.

Alan Colvin · #5 10-13-2001, 04:43 PM

Would anyone be interested in purchasing the same stainless chambered exhaust that was produced back in 1985-86 under the C & C Automotive business name? I still have the original tooling and fixtures and would consider producing it again if the demand is there. Maybe some of you guys still have the systems I sold you back then from the late 1980's. Let me know..

Alan Colvin
Chevrolet by the Numbers
[email protected]

Unreal · #6 10-14-2001, 06:18 AM

Alan,
I think I got one of your systems from D&R in Chicago. Was it 410 stainless, and supposedly made from the original tooling?
I'm happy with the system, just trying to confirm the story I was told.

Alan Colvin · #7 10-13-2001, 07:01 PM

All my original systems are easily ID'd, as all of them have a small C inside of a C logo stamping (C & C Automotive) on each component of the system. The stampings were usually at the end of each pipe. The hangers were also stamped with the logo as well.

Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars.