Chambered exhaust

**copo69** · #1 02-03-2010, 10:31 PM

Guy asked this question over on Classracer.com.

Any copo's have documented factory installed chambered exhaust?

**iluv69s** · #2 02-03-2010, 10:58 PM

didn't #3 yellow ZL-1 have chambered ?...the Berger car..didn't Charlie own that at one time?....(as if there is a car he did not own at one time or another !!)

**mockingbird812** · #3 02-03-2010, 11:39 PM

I believe Kevin D's COPO Chevelle was factory documented C Exhaust. Beastly sounding btw!!

**Stefano** · #4 02-03-2010, 11:46 PM

Yes.

LS6 RAT · #5 02-04-2010, 01:20 AM

When I had my L78 Camaro SS convertible restored at Bob Harris's Camaro Specialties in East Aurora, NY in 2001, I was looking at buying his Fathom Green, green interior COPO Camaro, with Canadian Docs. It was ordered as L72, M22, Chambered Exhaust and Endura bumper. I wish I had now.

**William** · #6 02-04-2010, 02:30 AM

Several COPOs are known to have been ordered with it; however ZL-1 #3 was not one of them. The HP Cars test of it back in '69 had some excellent undercarriage photos showing the standard single muffler/dual resonator system. It was later restored with chambered.

**iluv69s** · #7 02-04-2010, 02:43 AM

Thanks William....

I guess it was later on after it was restored that I saw the chambered on the car..

**markjohnson** · #8 02-04-2010, 03:01 AM

I love the sound of Chambered exhaust in the morning........it sounds like victory.

gexhaust · #9 02-04-2010, 06:11 AM

Only one documented Chambered ZL-1. That was an orange Car. The car is now owned by Ervin Harquail and was written up in a magazine fairly recently.

Keith Tedford · #10 02-04-2010, 06:19 AM

I have information on one COPO Chevelle having come from the factory with chambered exhaust. Apparently, while it sounded good, it was restrictive and actually hurt power. Our car was loud enough with the standard reverse flow mufflers and they probably hurt performance too.