Exhaust Torque Specs
Thread Starter
Burning Brakes
Joined: Sep 2012
Posts: 997
Likes: 267
From: Vancouver, Washington
Exhaust Torque Specs
Hi All,
I removed my exhaust manifolds and had them ceramic coated. I'm putting things back together and I'm wondering if there are torque specs for the nuts on the down-pipe at the bottom of the manifold and where those pipes attach to the tailpipes. I searched the Internet but didn't find an answer so maybe those connections are specified. TIA.
I removed my exhaust manifolds and had them ceramic coated. I'm putting things back together and I'm wondering if there are torque specs for the nuts on the down-pipe at the bottom of the manifold and where those pipes attach to the tailpipes. I searched the Internet but didn't find an answer so maybe those connections are specified. TIA.
Team Owner
Joined: Dec 2012
Posts: 30,427
Likes: 1,609
From: Outside the Quick Stop N.J.
All stock parts ? I would just tighten them up firmly and call it a day. When I did my full exhaust swap that is what I did, no issues at all. I would recommend putting a little anti seize on the threads as well.
Safety Car
Joined: Mar 2007
Posts: 4,355
Likes: 542
From: Sarasota FL
St. Jude Donor '25-'26
Here are the torque specs for a C6Z posted by a forum member.
https://drive.google.com/file/d/1NLL...p=sharingC6Z06
https://drive.google.com/file/d/1NLL...p=sharingC6Z06
Thread Starter
Burning Brakes
Joined: Sep 2012
Posts: 997
Likes: 267
From: Vancouver, Washington
Thanks Keppler. That's a great list but the locations I was referring to aren't listed on there. I will keep that list for future work however. In the absence of finding any specs on the pipe nuts I ended up doing what Patsgarage suggested. I probably got them all around 35 pounds feet. I started the car today and there were no leaks so all is well!
Race Director
Joined: Sep 1999
Posts: 12,438
Likes: 919
From: CONCORD NC
I compiled those sheets from the GM Service site 15 years ago when I had access: unfortunately there are some odds and ends that weren't listed in the manuals by group. It's pretty easy to interpolate missing torque by their thread diameter.
Race Director
Joined: Sep 1999
Posts: 12,438
Likes: 919
From: CONCORD NC
The C5 version has an "exhaust" section, might be helpful for estimating even though the faster style is probably different. I can't remember after all of the years and cars that have passed through.
https://drive.google.com/file/d/1gdi...ew?usp=sharing
https://drive.google.com/file/d/1gdi...ew?usp=sharing
