Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

cats and lt's?

Thread Tools
 
Search this Thread
 
Old Jun 19, 2008 | 04:42 PM
  #1  
King Nothing's Avatar
Thread Starter
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (9)
 
Joined: Oct 2005
Posts: 4,768
Likes: 26
From: Central Valley
Default cats and lt's?

anyone running your original cats with their lt's or you running high-flow cats?

john
Reply
Old Jun 19, 2008 | 05:04 PM
  #2  
ae13291's Avatar
Banned
iTrader: (8)
 
Joined: Jun 2007
Posts: 3,093
Likes: 1
From: san fernando valley, california
Default

its not really possible to fab up ur original cats to the LT's because the originals are angled
Reply
Old Jun 19, 2008 | 05:12 PM
  #3  
stevied916's Avatar
TECH Enthusiast
iTrader: (30)
 
Joined: Jul 2007
Posts: 546
Likes: 1
From: Sacramento, CA
Default

How are you going to run the original cats? I have a custom exhaust from the headers back and it was hard to fit the cat on the drivers side. My car is lowered and it scrapes over speed bumps if I'm not careful
Reply
Old Jun 19, 2008 | 05:18 PM
  #4  
King Nothing's Avatar
Thread Starter
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (9)
 
Joined: Oct 2005
Posts: 4,768
Likes: 26
From: Central Valley
Default

some cutting and welding and it can be possible . . . even though i avoid every speed bump i'm aware of the ground clearance issue with my car being lowered. i just want this SES light gone and i'm not ready yet to go get a tune, i'm plannin on waitin till i get my cam and heads in then get a tune . . . so cats back on with o2's plugged in and have no more code. just tryin to see my possibilites
Reply
Old Jun 19, 2008 | 05:22 PM
  #5  
ae13291's Avatar
Banned
iTrader: (8)
 
Joined: Jun 2007
Posts: 3,093
Likes: 1
From: san fernando valley, california
Default

then get some o2 sims!!!
Reply
Old Jun 19, 2008 | 05:23 PM
  #6  
ae13291's Avatar
Banned
iTrader: (8)
 
Joined: Jun 2007
Posts: 3,093
Likes: 1
From: san fernando valley, california
Default

u can also add a bung to the rear o2's to make them come out a bit more and that can also eliminate the ses code
Reply
Old Jun 19, 2008 | 05:40 PM
  #7  
King Nothing's Avatar
Thread Starter
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (9)
 
Joined: Oct 2005
Posts: 4,768
Likes: 26
From: Central Valley
Default

it would quiet it down would it not? currently my exhaust is race version pacesetters with 2.5" H-pipe true duals into LM1's and under the axle out the back. but also stock cats wouldn't be that great for the cam i have goin in since i need the best flowing exhaust . . . so i'm kinda at loss, opions? should i just say screw it and get the tune now and re-tune when i get the heads in cam in, put cats on with o2's or put o2 sims in?
Reply
Old Jun 19, 2008 | 11:26 PM
  #8  
todds87ss's Avatar
Staging Lane
 
Joined: May 2004
Posts: 53
Likes: 0
From: Lake Jackson, Tx
Default

If you have race LTs, I assume you have removed the A.I.R. Cats won't last long without it. You are best off getting the tune now. Retunes are usually not expensive.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jun 20, 2008 | 12:26 AM
  #9  
ae13291's Avatar
Banned
iTrader: (8)
 
Joined: Jun 2007
Posts: 3,093
Likes: 1
From: san fernando valley, california
Default

Originally Posted by King Nothing
it would quiet it down would it not? currently my exhaust is race version pacesetters with 2.5" H-pipe true duals into LM1's and under the axle out the back. but also stock cats wouldn't be that great for the cam i have goin in since i need the best flowing exhaust . . . so i'm kinda at loss, opions? should i just say screw it and get the tune now and re-tune when i get the heads in cam in, put cats on with o2's or put o2 sims in?
dont get a complete tune! u can sometimes get ur tuner to do it for free. he will jus remove the ses codes! or like i said they sell an adaptor that will bring out the o2 from the piping, this will stop the codes because the o2 will sense that there is not much smog flowing through the sensor
Reply
Old Jun 20, 2008 | 09:01 AM
  #10  
King Nothing's Avatar
Thread Starter
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (9)
 
Joined: Oct 2005
Posts: 4,768
Likes: 26
From: Central Valley
Default

thanks guys . . . i'm buying a set of o2 sims and i'll put them in next week
Reply




All times are GMT -5. The time now is 08:24 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE