Npp
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Le Mans Master
Joined: Jun 2008
Posts: 8,223
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From: Mt. Sinai NY
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,106
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
The easiest and guaranteed way to fit any bi-mode muffler on any LS2 or LS3 car, is to cut the muffler off the pipe and weld it back onto your current pipe. That bypasses all concerns of trying to fit around trans of model year differences. Of course, take a trial fit before cutting anything, since you might get lucky.
In the OP's case, the Z06 pipe size is 3" vs his LS3 at 2.5", so cutting is the easy choice.
In the OP's case, the Z06 pipe size is 3" vs his LS3 at 2.5", so cutting is the easy choice.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
If you add long tube headers at the same time, just get the connector pipes for a Z06 from the same folks that made your headers. It will all bolt together.
On my 2013 narrow body, I have Kooks long tube headers, Kooks mid pipes for Z06/ZR1, and ZR1 mufflers (same size as Z06 mufflers). It all bolted together with no muss, no fuss, and no rattles.
On my 2013 narrow body, I have Kooks long tube headers, Kooks mid pipes for Z06/ZR1, and ZR1 mufflers (same size as Z06 mufflers). It all bolted together with no muss, no fuss, and no rattles.
Race Director
Joined: Apr 2000
Posts: 15,344
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From: Texas
The following thread details my swap of the Z06 *system* to my 2013 Grand Sport. It includes the list of all parts and years of components used. https://www.corvetteforum.com/forums...completed.html Eventually I replaced the catted ZR1 midpipe with a Corsa midpipe that didn't have the secondary cats.
