Its amazing the GTO can exhale! - Pontiac GTO Forum
User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 08-18-2004, 06:12 PM Thread Starter
 
Join Date: Aug 2004
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Its amazing the GTO can exhale!

This exhaust system is as bad if not worse than the stock LS1 F-Body's drivers side crimp job. Check it out...









I'm fixin' to fix that





Stay tuned for more pics

Last edited by Bill Reid; 08-18-2004 at 06:14 PM.
Bill Reid is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 08-18-2004, 06:58 PM
 
Join Date: Aug 2004
Posts: 159
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sweet... What type of headers and exhaust?
Redline is offline  
post #3 of 16 (permalink) Old 08-18-2004, 07:25 PM
 
Join Date: Aug 2004
Posts: 116
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Cool....adding A Cat Back Exhaust System Is On My List Of Modifications. The Hard Thing Is Figuring Out Which One To Choose. Borla, Corsa, And Slp Now Have Systems Available.
BRIAN P. EWING is offline  
 
post #4 of 16 (permalink) Old 08-18-2004, 07:58 PM
 
Join Date: Aug 2004
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
nice!
zgoat is offline  
post #5 of 16 (permalink) Old 08-18-2004, 08:19 PM Thread Starter
 
Join Date: Aug 2004
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Redline
Sweet... What type of headers and exhaust?
Stainless Works
Bill Reid is offline  
post #6 of 16 (permalink) Old 08-19-2004, 09:40 AM
 
Join Date: Aug 2004
Posts: 109
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It will be nice if the headers go up from the bottom! I've done two sets on F bodys, and they had to go in from the top. Never figured that valve covers would have to come off to install headers. The Goat should be cake.
rock421 is offline  
post #7 of 16 (permalink) Old 08-19-2004, 01:18 PM Thread Starter
 
Join Date: Aug 2004
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by rock421
It will be nice if the headers go up from the bottom! I've done two sets on F bodys, and they had to go in from the top. Never figured that valve covers would have to come off to install headers. The Goat should be cake.
Drivers side feeds in from the bottom. Ya gotta snake it in with the rack dropped and feed the P/S lines through as shown. Kind of a pain... but necessary with the rack behind the motor instead of in front. The passanger side is cake... drops right in from the top.
Bill Reid is offline  
post #8 of 16 (permalink) Old 08-19-2004, 02:59 PM
 
Join Date: Aug 2004
Posts: 109
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Cool, thanks. I think that headers and a 100 shot should get the job done when the 05" arrives.
What are we doin about "big brother" and his OBDII chronies????
A chop right behind the aft cats with a new back half system would eliminate all of the factory crimps. The stock manifolds don't look all that bad if that was the only legal option.
I wonder if any of those crimps were put there intentionally to achieve the "GTO sound" they were looking for?
rock421 is offline  
post #9 of 16 (permalink) Old 08-19-2004, 06:12 PM Thread Starter
 
Join Date: Aug 2004
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
This ride is getting the Stainless Works full exhaust system. Headers... and full 3" stainless with X, high flow cats, and chambered "mufflers" ... with a single oval style exit in the stock location. We have found with this kit that the front and rear O2 sensors are not long enough for their new locations. I have new style 04 Corvette front O2 sensors on order for the fronts... same sensor and connector just much longer pig tail. I have extensions for the rear O2 sensors... which have the same flat4 style connector as the OLD C5 Corvette front O2 sensors.

This car will still have fully functional front and rear O2 sensors. It remains to be seen if the PCM pops a code or 2 due to the high flow cats. We'll see.

The stock cast iron manifolds have small ball joint style exits. The exits are smaller than a stock C5 cast iron manifold. Yet this engine in either car produces the same rear wheel results. Pretty amazing considering the amount of crimps in the stock GTO exhaust system. BTW, the crimps are there because of the exhaust systems proximity to other parts underneath the car.
Bill Reid is offline  
post #10 of 16 (permalink) Old 08-22-2004, 05:26 PM
 
Join Date: Jul 2004
Posts: 51
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Bill Reid
This ride is getting the Stainless Works full exhaust system. Headers... and full 3" stainless with X, high flow cats, and chambered "mufflers" ... with a single oval style exit in the stock location. We have found with this kit that the front and rear O2 sensors are not long enough for their new locations. I have new style 04 Corvette front O2 sensors on order for the fronts... same sensor and connector just much longer pig tail. I have extensions for the rear O2 sensors... which have the same flat4 style connector as the OLD C5 Corvette front O2 sensors.

This car will still have fully functional front and rear O2 sensors. It remains to be seen if the PCM pops a code or 2 due to the high flow cats. We'll see.

The stock cast iron manifolds have small ball joint style exits. The exits are smaller than a stock C5 cast iron manifold. Yet this engine in either car produces the same rear wheel results. Pretty amazing considering the amount of crimps in the stock GTO exhaust system. BTW, the crimps are there because of the exhaust systems proximity to other parts underneath the car.

By looking at those pics that almost makes me sick. The exhuast flow of that they are impeding is HORRIBLE. I don't undertand the needs to bend and crimp in that manner. By seeing these pics I now know that a fully stainless mandrel bent exhaust will do wonders for this car. I am pretty sure with straight through cat's you would throw a code on your PCM but with High Flow cats I think you might be able to get away with no codes. In my experiences the high flows seem to work wonders on not throwing codes. I hope to see some pics of the full system when on, and maybe even some dyno numbers so we all can see what kind of gains a full header and exahaust system will provide.
2tirefire is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 2004-2006 GTO > Service, Maintenance and Technical Discussion

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome