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

what size cutout do i need??

Thread Tools
 
Search this Thread
 
Old Sep 22, 2005 | 11:26 AM
  #1  
Raise's Avatar
Thread Starter
TECH Addict
20 Year Member
iTrader: (31)
 
Joined: Dec 2003
Posts: 2,152
Likes: 0
From: Virginia Beach, Va
Default what size cutout do i need??

i have stock exhaust which is 2.75". should i go with 2.5" or 3"?? and how would u get 3" to fit the 2.75" stock pipe??
Reply
Old Sep 22, 2005 | 11:29 AM
  #2  
NassyVette's Avatar
TECH Enthusiast
iTrader: (22)
 
Joined: Apr 2002
Posts: 662
Likes: 1
From: Chicago
Default

Get the 3in...its a little too big but you can still weld it on fine.
Reply
Old Sep 22, 2005 | 11:29 AM
  #3  
LS69TA's Avatar
TECH Veteran
iTrader: (30)
 
Joined: Jan 2003
Posts: 4,391
Likes: 0
From: Texarkana, Tx
Default

3". They'll just fill in the gap with weld. Or they'll flare out a small pice of pipe to smooth the transition.
Reply
Old Sep 22, 2005 | 04:16 PM
  #4  
Raise's Avatar
Thread Starter
TECH Addict
20 Year Member
iTrader: (31)
 
Joined: Dec 2003
Posts: 2,152
Likes: 0
From: Virginia Beach, Va
Default

thanks fellas
Reply
Old Sep 22, 2005 | 04:22 PM
  #5  
LS69TA's Avatar
TECH Veteran
iTrader: (30)
 
Joined: Jan 2003
Posts: 4,391
Likes: 0
From: Texarkana, Tx
Default

Any time. That's what we're here for.
Reply
Old Sep 22, 2005 | 07:16 PM
  #6  
Order 66's Avatar
TECH Resident
 
Joined: Aug 2005
Posts: 762
Likes: 0
Default

As they said, 3 inch will do ya just fine.
Reply
Old Sep 22, 2005 | 07:18 PM
  #7  
joblo1978's Avatar
Banned
iTrader: (14)
 
Joined: Nov 2003
Posts: 2,220
Likes: 0
From: Colorado Springs
Default

Do you plan on getting a catback in the future? If you do, I would get a cutout installed afterwards.
Reply
Old Sep 22, 2005 | 07:57 PM
  #8  
Raise's Avatar
Thread Starter
TECH Addict
20 Year Member
iTrader: (31)
 
Joined: Dec 2003
Posts: 2,152
Likes: 0
From: Virginia Beach, Va
Default

nah, no use in getting a catback. waste of money. might get a muffler to replace the stock one, but why get new i pipe, muffler, and outlet pipes when all im really doing is replacing the muffler?? anyway, this is just a small mod for right now cuz im on a tight budget at the moment. and im sick of this quiet car
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-1

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

 Verdad Gallardo
story-2

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

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-5

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-6

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-7

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

 Verdad Gallardo
story-8

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-9

10 Camaros You Should Never Buy

 
Old Sep 25, 2005 | 04:22 PM
  #9  
MarleyZ28's Avatar
Teching In
 
Joined: Sep 2005
Posts: 40
Likes: 0
From: Chicago
Default

another vote for 3". i got a 3" on my stock exhaust and it fit just fine. good luck
Reply
Old Sep 25, 2005 | 04:28 PM
  #10  
'Trust''s Avatar
10 Second Club
iTrader: (24)
 
Joined: Aug 2004
Posts: 7,972
Likes: 4
From: Eternity
Default

lol, i didnt even know the stock was 2.75 when i got my 3 inch, oh well it welded up fine, but its hooked up to the 3 inch now so its all good
Reply




All times are GMT -5. The time now is 09:25 PM.

story-0
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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