Exhaust header question
Thread Starter
Burning Brakes
Joined: Feb 2005
Posts: 1,198
Likes: 73
From: palm harbor Florida
Exhaust header question
Read an interesting article on the forum about someone who put Z06 headers, cats and exhaust on their C6 and picked up 30HP.
Is this because the Z has a better set of headers?
Here's the article.
Over the Christmas holiday I installed a 2007 C6 Z06 exhaust system (manifolds, Cats, H pipe) plus Corsa Z06 3 inch Sports on my 2006 C6 A6. I did a pre and post dyno run on a Dynojet 248 for comparasion. The car was tuned (A/R ratio, timing, etc) to the same level for each dyno pull. Pre Z06 exhasut was 343 rwhp and post was 373 rwhp. There are a bunch of Z06 guys putting headers on the Vettes. The shop I use had 4 pairs just collecting dust. However, the Z06 guys tend to keep their NPP mufflers, but Corsa, B&B and Borla all make 3 inch Z06 mufflers. The installation was not difficult. I bought GM LS7 manifold gaskets and some O2 sensor wire extensions for the forward O2 sensors. The clearance around the A6 transmission is tighter than I want, so I will get some minor exhaust pipe work. Manual transmission C6's should be no problem at all. Bottom line. I think this is a good 30 hp mod for C6 Vettes if you can get your hands on a discarded Z06 exhaust system.
Is this because the Z has a better set of headers?
Here's the article.
Over the Christmas holiday I installed a 2007 C6 Z06 exhaust system (manifolds, Cats, H pipe) plus Corsa Z06 3 inch Sports on my 2006 C6 A6. I did a pre and post dyno run on a Dynojet 248 for comparasion. The car was tuned (A/R ratio, timing, etc) to the same level for each dyno pull. Pre Z06 exhasut was 343 rwhp and post was 373 rwhp. There are a bunch of Z06 guys putting headers on the Vettes. The shop I use had 4 pairs just collecting dust. However, the Z06 guys tend to keep their NPP mufflers, but Corsa, B&B and Borla all make 3 inch Z06 mufflers. The installation was not difficult. I bought GM LS7 manifold gaskets and some O2 sensor wire extensions for the forward O2 sensors. The clearance around the A6 transmission is tighter than I want, so I will get some minor exhaust pipe work. Manual transmission C6's should be no problem at all. Bottom line. I think this is a good 30 hp mod for C6 Vettes if you can get your hands on a discarded Z06 exhaust system.
Pro
Joined: Jul 2006
Posts: 552
Likes: 28
From: North Las Vegas Nevada
The C6 Z06 with the LS7 engine has a very good exhaust system. The exhaust manifolds flow very well the the rest of the system to include the Cats and H pipe is a full 3 inch system. Corsa, B & B, and Borla claim their Z06 mufflers are better than the Z06 NPP system. I am not sure because all of the Z06 guys in Vegas that put headers on their Z06 Vettes keep the mufflers.
