Stock Exhaust Diameter - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 04-25-2005, 12:09 AM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2005
Location: Iowa
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
josho66 is on a distinguished road
Default Stock Exhaust Diameter

I was wondering what is the stock size of exhaust pipe on a '00+ SSEI. I am going to do new exhaust but I need to know what inlet size to get. I searched and can't get an exact answer.

Thanks.
josho66 is offline   Reply With Quote
Old 04-25-2005, 01:08 PM   #2
Senior Member
Certified Car Nut
 
Join Date: Oct 2003
Posts: 19,756
Thanks: 0
Thanked 0 Times in 0 Posts
1993 SLE is on a distinguished road
Default

believe its 2.5
1993 SLE is offline   Reply With Quote
Old 04-25-2005, 01:17 PM   #3
Junior Member
 
Join Date: Mar 2004
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
harofreak00 is on a distinguished road
Default

as far as i know, its the same as it is on my 95

2.5 inlet and 2.5 outlet on the cat
2.5 inlet and 2.25 outlet on the res
2.25 inlet and 2.25 outlet on the muffler
harofreak00 is offline   Reply With Quote
Old 04-26-2005, 09:53 AM   #4
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2005
Location: Iowa
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
josho66 is on a distinguished road
Default

That is what I thought but I wanted to make sure
josho66 is offline   Reply With Quote
Old 04-26-2005, 10:43 PM   #5
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

The 2000 models must be slightly different than the 95'*.

The stock pipes after the 2.25" Y are only 2".
2000SilverBullet is offline   Reply With Quote
Old 05-04-2005, 12:41 AM   #6
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2005
Location: Iowa
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
josho66 is on a distinguished road
Default

Quote:
Originally Posted by 2000SilverBullet
The 2000 models must be slightly different than the 95'*.

The stock pipes after the 2.25" Y are only 2".
That sucks. I got mufflers with 2.5" inlets and outlets. I will either have to have them replace the pipe after the Y section with new 2.5" pipe or I will have to have them just weld on an adaptor or something to mate the 2" pipe with the 2.5" mufflers. No big deal I guess.
josho66 is offline   Reply With Quote
Old 05-05-2005, 01:45 AM   #7
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

Quote:
I got mufflers with 2.5" inlets and outlets. I will either have to have them replace the pipe after the Y section with new 2.5" pipe or I will have to have them just weld on an adaptor or something to mate the 2" pipe with the 2.5" mufflers. No big deal I guess.
Don't you dare
Replace the stock restrictive 2" pipe with 2 1/2". You can buy a new Y piece on the internet.
2000SilverBullet is offline   Reply With Quote
Old 05-05-2005, 09:39 AM   #8
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2005
Location: Iowa
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
josho66 is on a distinguished road
Default

Quote:
Originally Posted by 2000SilverBullet
Quote:
I got mufflers with 2.5" inlets and outlets. I will either have to have them replace the pipe after the Y section with new 2.5" pipe or I will have to have them just weld on an adaptor or something to mate the 2" pipe with the 2.5" mufflers. No big deal I guess.
Don't you dare
Replace the stock restrictive 2" pipe with 2 1/2". You can buy a new Y piece on the internet.
I will have to have the exhaust shop do it. I have an appt. in the morning to get it done. I will just have them put on a new y that goes from the stock 2.25" pipe and splits to two 2.5" pipes to the mufflers.

Should I have them replace from the cat back with 2.5" or leave the stock 2.25"??? I might as well do it all if I am going to.
josho66 is offline   Reply With Quote
Old 05-06-2005, 12:53 AM   #9
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

If you are having a shop do it, I would go as far as you can in 2 1/2". I would be tempted to replace the resonator with a similar size but with 2 1/2" in and out.

With my TOG headers, the outlet is 3" and I will eventually go 3" all the way to a Y that splits to two 2 1/2" exhaust pipes and flow thru Borla'* or Magnaflow'*.
2000SilverBullet is offline   Reply With Quote
Old 05-06-2005, 12:55 AM   #10
Senior Member
Certified GM nut
 
Join Date: Jul 2003
Location: Chicagoland
Posts: 1,712
Thanks: 0
Thanked 0 Times in 0 Posts
TaylorD is on a distinguished road
Default

Quote:
Originally Posted by 2000SilverBullet
Don't you dare
Replace the stock restrictive 2" pipe with 2 1/2".
Got a chuckle out of me on that one Paul
I've been thinking about gettin a new exhaust system myself. Haven't decided on mufflers yet but going to keep the stock tips i think. josho66 what are you going with? Were going to need some pics and some audio/video when your done.

Right now the TOG header down pipe is 3" going to SLP cat 3" in and out and 3in into the resonator and 2.5 out and rest is stock. Probably going to an exhaust shop recomended by IL grand prix club to finsh off the rest in 2.5" Little bit of a drive but for a deal it'* worth it.
TaylorD is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
buick century exhaust diameter vladbuick Buick 2 09-12-2013 12:59 PM
What Diameter Is The I-pipe Of The Exhaust System? 1999Daytona500PaceCar Bonneville GXP/ Northstar Powered Cars 8 06-22-2006 11:10 AM
exhaust pipe diameter pimpindabonneville Performance, Brainstorming & Tuning 2 07-28-2004 03:23 PM
'98 SSEi Exhaust Diameter aCiD 1992-1999 3 04-13-2003 02:30 AM
1998 Exhaust Diameter aCiD 1992-1999 2 04-04-2003 08:18 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:52 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.