looking for chambered exhaust for my 69Z,would like to know more about it.if any one has put them on and where I could get them.if you have to run headers with it etc..any and all comments will be helpfull.thanks .....Z-28ROOKIE
Chambered exhaust was standard on 1969 Z/28s built through around November 1968. Because of complaints concerning excessive noise, at that time it became optional and the production muffler became standard equipment. In May 1969 chambered was dropped as an option. It does not require headers; they were not optional for 1969. Despite its reputation as a performance exhaust system testing has shown it is quite restrictive.
Several repro systems are offered although word is they do not have the same rich tone as the original.
I have a set of b/b chambered, made with 409 stainless, using the original tooling.
The guy who made them 10 or 12 years ago (Alan Colvin) is thinking of making them again. Go to Yenko.net and look for the threads.
I think most the systems out there are made for exhaust manifolds, and would have to be modified for headers.
I have the chambered exhaust system on my car with hookers and a cross over pipe off the back of the headers . Many of the suppiers in the US offer the original type chambered exhaust system Padduck , D&R ect. but Iv'e only seen it in the manifold version . Very costly. and the only parts of that system you can use with the header set up is from the two center mufflers back . sounds and works great . By the way hookers were also available from chevy in 69 but I dont know if the two were ever offered together
PS on the hookers in 69 , they were not available as a factory fit they came bubble wrapped in the trunk and the dealer had to install them , saw on car at a show that had the original set still bubble wrapped the the trunk , very rare
The "factory headers" in '68 that either came in the trunk or were available over the parts counter were all made by Kustom Equipment Co., a speed shop in Flint, Michigan; they also made the OEM-installed headers for the DOHC 16-valve fuel-injected Cosworth-Vega in 1975-76.
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