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

removing stock cats

Thread Tools
 
Search this Thread
 
Old May 2, 2005 | 06:24 PM
  #1  
tuffluck's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: Dec 2003
Posts: 1,718
Likes: 0
From: Dallas, Tx
Default removing stock cats

i've got a set of stock cats that are in good shape, and i'd like to replace my stock ones, but am afraid that the bolts that hold the stock cats in place are going to break or strip or something the second i try to take them off. my plan is to buy wd40 and spray the hell out of them, but i was wondering if anyone else had any other ideas for this? how long of a job am i looking at?
Reply
Old May 2, 2005 | 06:43 PM
  #2  
RPM WS6's Avatar
LS1Tech Administrator
20 Year Member
Shutterbug
Community Builder
Community Influencer
iTrader: (3)
 
Joined: Nov 2001
Posts: 34,628
Likes: 2,543
From: Schiller Park, ILL Member: #317
Default

If they are working fine then why replace them? Or do you just plan to use an off road pipe?

Anyway, I'd skip the WD40 and use some PB Blaster or Liquid Wrench....they work better. Still a good chance that you might break a stud on the cat to manifold connection though.....
Reply
Old May 2, 2005 | 06:57 PM
  #3  
Lithium's Avatar
SSU's Drunk Typing Whore
iTrader: (47)
 
Joined: Jan 2004
Posts: 4,608
Likes: 0
Default

Dont be surprised if you do break a bolt, its most likely going to happen. Wd40 works good, but as mentioned use can use some PB blaster as well. Just be sure to soak them really good the night before if you use wd40.
Reply
Old May 2, 2005 | 07:21 PM
  #4  
ddelallata's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Mar 2004
Posts: 1,460
Likes: 0
From: Brownsville, Tx
Default

why do you want to replace the ones that you have right now? If your car is in good operating condition they should be working.
Reply
Old May 2, 2005 | 07:31 PM
  #5  
elite22xl's Avatar
TECH Apprentice
iTrader: (1)
 
Joined: Nov 2004
Posts: 336
Likes: 1
From: north NJ
Default

another vote for pb blaster, the longer you let it sit the better. 45k miles and 1 broken bolt, or maybe 2, idk i was too excited about my headers at the time
Reply
Old May 5, 2005 | 07:18 PM
  #6  
calys968's Avatar
TECH Apprentice
 
Joined: Nov 2004
Posts: 309
Likes: 0
From: Tucson, AZ
Default

Be sure to spray the hell out of the bolts, I'm removing my cats right now and I've already broken one
Reply
Old May 5, 2005 | 08:34 PM
  #7  
yak's Avatar
yak
TECH Fanatic
iTrader: (15)
 
Joined: May 2004
Posts: 1,393
Likes: 3
From: SE Wisco
Default

pb blaster here, 781k miles and 2 busted bolts, only let it sit for about 5 minutes
Reply
Old May 5, 2005 | 08:56 PM
  #8  
lastcall190's Avatar
TECH Addict
iTrader: (36)
 
Joined: May 2004
Posts: 2,656
Likes: 4
From: NJ
Default

PB blaster and give the head of the bolt a nice little tap (or smack) with a hammer or something. That stuff has rarely failed me...
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 May 6, 2005 | 09:31 AM
  #9  
SiRgReg23's Avatar
Temple, TX Resident
 
Joined: Oct 2004
Posts: 158
Likes: 0
Default

one vote for impact gun here took mine right off without breaking or did i just get lucky lol
Reply
Old May 6, 2005 | 02:18 PM
  #10  
kkkevvvinnn's Avatar
On The Tree
 
Joined: Oct 2004
Posts: 172
Likes: 0
From: Michigan
Default

ya dont use wd40 it never worked well for me either....i used actually an offbrand thing witch worked awesome! lol
Reply




All times are GMT -5. The time now is 12:56 AM.

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