LT1-LT4 Modifications 1993-97 Gen II Small Block V8

dual cat to single cat

Thread Tools
 
Search this Thread
 
Old Apr 11, 2005 | 03:39 PM
  #1  
DopdBrd's Avatar
Thread Starter
TECH Addict
iTrader: (25)
 
Joined: Nov 2004
Posts: 2,529
Likes: 0
From: Garden City, KS
Default dual cat to single cat

can i convert my dual cat 97 to a single cat?? i am going to get pacesetter longtubes and have a custom y pipe made. do i have to put in both cats or can i just go with one????
Reply
Old Apr 11, 2005 | 05:16 PM
  #2  
900DollarZ's Avatar
Teching In
 
Joined: Jan 2005
Posts: 26
Likes: 0
Default

Ooh.... I'm afraid you're gonna have to put the cats end-to-end. The motor requires 2 cats to run correctly......









j/k!!

Why bother with a cat at all?

You will need 2 O2 sims, though.
Reply
Old Apr 11, 2005 | 07:18 PM
  #3  
Snow Dog's Avatar
TECH Resident
iTrader: (3)
 
Joined: May 2004
Posts: 895
Likes: 1
Default

yes you can get away with only one cat. the problem will be making a system that has good bends to it yet only has one cat. theres not a lot of room with LTs on the car. youll need either two o2 bungs welded in after the cat or two o2 sims. id get the sims
Reply
Old Apr 11, 2005 | 07:28 PM
  #4  
lastcall190's Avatar
TECH Addict
iTrader: (36)
 
Joined: May 2004
Posts: 2,656
Likes: 4
From: NJ
Default

I had the same idea back when I had my car. Some people said the cat would be a little too far downstream to work effectively (get heated up). you would need 02 sims tho, my OBD1 didn't give a crap what I did to it. IMO if you dont have any emissions testing, just leave the cats off. Or else just put two on, I doubt you'll notice any/much difference at all. Good luck!

-J
Reply
Old Apr 12, 2005 | 02:38 PM
  #5  
DopdBrd's Avatar
Thread Starter
TECH Addict
iTrader: (25)
 
Joined: Nov 2004
Posts: 2,529
Likes: 0
From: Garden City, KS
Default

The Only Reason I Want Cats Is I Dont Want My Exhaust To Be Too Loud.
Reply
Old Apr 12, 2005 | 09:41 PM
  #6  
matrik's Avatar
12 Second Club
iTrader: (5)
 
Joined: May 2004
Posts: 346
Likes: 0
From: Richmond, VA
Default

when i bought my car, its a 97, it has only 1 cat. it has JBA shorties, to a y-pipe i'm not sure of, with a high flow cat welded in, to a borla catback. Car has all the 02 sensors, did someone say this would cause the car not to run correct?
Reply
Old Apr 12, 2005 | 09:51 PM
  #7  
lastcall190's Avatar
TECH Addict
iTrader: (36)
 
Joined: May 2004
Posts: 2,656
Likes: 4
From: NJ
Default

That's what I had been told, then again, I didn't do it so I can't be sure. Then again, in my case they were commenting on LTs, whereas you have shorties. If you have LTs I was under the impression that dual or none were your options. Who knows?

-J
Reply
Old Apr 13, 2005 | 06:46 PM
  #8  
DopdBrd's Avatar
Thread Starter
TECH Addict
iTrader: (25)
 
Joined: Nov 2004
Posts: 2,529
Likes: 0
From: Garden City, KS
Default

i will prolly get the off road pipe and then if its too loud ill weld in 2 cats. i know taht right now with the GMMG it is loud as hell outside, which if its louder outside i dont really care. but i dont want it to get louder inside. right now it is just right, but i know if i would take the cats off it would be soo much worse.
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




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