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Exhaust for my Caddy

  
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Exhaust for my Caddy

 
69GTOby 69GTOby
Guru | Posts: 1117 | Joined: 02/09
Posted: 07/16/14
04:40 PM

I wasn't sure where to post this thread...  I just bought a '90 Cadillac Brougham a few months ago.  It's in great shape, has 59k miles, and the 350 TBI Chevy engine.  I modified the air cleaner and I'm in the process of upgrading the TBI.  I need to replace the exhaust.  The y pipe is more like a "t" pipe and with only a 2 1/4" collector.  I found this y pipe "Walker 40315" which is for a '92 Caprice.  It also has the 2 bolt flanges, appears to have the same general shape but sports a more favorable merge and a 3" collector.  Does anyone know if this will bolt up to my manifolds??  
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1969 GTO resto in progress. '76 350+.060, #13 heads, 9.2:1 CR, Lunati cam, Edelbrock Performer, 750 Holley, HEI, Ram Air manifolds, 2 1/2" exhaust. TH400 trans w/shift kit and 2400 stall.  235/60/15 front, 275/60/15 rear on Rally II 15X7s.  GM 12 bolt posi with 3.73's.

idrivejunk idrivejunk
Addict | Posts: 5148 | Joined: 12/09
Posted: 07/16/14
05:28 PM

Hmm. I bet nobody here will know that one. Waynecyclopedia is out of commission but I bet he could find out, if he wasn't. I googled B-body forums and once you sort out the Mopars, theres an active forum or two, such as: http://www.gmbbodyforum.com/ which was the top search result. I bet somebody there would know. If I had to guess I'd say yes, at least if it doesn't fit it shouldn't need a whole lot of modification. But who knows, GM was crazy about specific manifolds for all the different cars. Personally I'd have something custom bent to fit and installed at a muffler shop, especially if the original stuff has never been apart.  
idrivejunk

69GTOby 69GTOby
Guru | Posts: 1117 | Joined: 02/09
Posted: 07/19/14
10:07 AM

Thank you idrive.  I went to a GM forum: GMforum.com and posted there.  I got a little feedback.  I think the only way I will know for sure is to try it...

Besides the y pipe, I want to replace the entire system, preferably with 3".  Pretty much no one makes an exhaust system for this car, stock type or otherwise.  Could I get a system for a different car that would work, or at least be close?

It's rusting out and needs replaced.  I need to put something in it's place...  
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1969 GTO resto in progress. '76 350+.060, #13 heads, 9.2:1 CR, Lunati cam, Edelbrock Performer, 750 Holley, HEI, Ram Air manifolds, 2 1/2" exhaust. TH400 trans w/shift kit and 2400 stall.  235/60/15 front, 275/60/15 rear on Rally II 15X7s.  GM 12 bolt posi with 3.73's.

idrivejunk idrivejunk
Addict | Posts: 5148 | Joined: 12/09
Posted: 07/19/14
05:13 PM

I must be not seeing the 800 pound gorilla in the room, maybe its hiding behind the curtain.

Why not go to a muffler shop? They make pipes to fit, on the spot. Fairly cheap labor.


The only time I have used pre-fab exhaust is for insurance wrecks on late models. Searching for a direct bolt-in for a 90s Chevillac seems like an exercise in futility. You might want some mandrel bent sections for the over-the-axle part of the tailpipes but other than that, custom bent is the way to go in my opinion.  
idrivejunk