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

why cat-back??

Thread Tools
 
Search this Thread
 
Old Jan 9, 2005 | 10:36 PM
  #1  
transam02's Avatar
Thread Starter
Staging Lane
 
Joined: Jun 2004
Posts: 77
Likes: 0
Default why cat-back??

Is there any advantage over a magnaflow cat-back than just a weld in magnaflow muffler.

Is the I-pipe any bigger with the cat-back over the stock 3" size.
Reply
Old Jan 9, 2005 | 10:43 PM
  #2  
slow's Avatar
TECH Senior Member
20 Year Member
iTrader: (7)
 
Joined: Dec 2001
Posts: 6,150
Likes: 7
From: Orlando
Default

if you really have a stock 3" I pipe, then no,

but since the stock pipe is not mandrel bent, has a nasty crush bend over the axle, and not 3" then there is a benefit of using a catback over the muffler.

Ryan
Reply
Old Jan 9, 2005 | 11:04 PM
  #3  
GREATWHITE's Avatar
On The Tree
 
Joined: Aug 2004
Posts: 139
Likes: 0
From: greenwood ,in
Default

I think the stock I pipe is 2-7/8in so yeah there will be a difference, granted not much 2-3hp but the sound will be slightly different also.
Reply
Old Jan 10, 2005 | 07:48 AM
  #4  
incautious's Avatar
Teching In
 
Joined: Jul 2004
Posts: 22
Likes: 0
Default

Besides being stainless steel, the intermediate pipe is 3" mandrel bent vs 2 3/4" pressure bent , which tapers down to 2 1/2". the tailpipes are also mandrel bent. Still you may only pick up 5-6 Hp with the pipes vs 10 or so with a free flow muffler.
Originally Posted by GREATWHITE
I think the stock I pipe is 2-7/8in so yeah there will be a difference, granted not much 2-3hp but the sound will be slightly different also.
Reply
Old Jan 10, 2005 | 12:58 PM
  #5  
transam02's Avatar
Thread Starter
Staging Lane
 
Joined: Jun 2004
Posts: 77
Likes: 0
Default

I appreciate the help guys.
Reply
Old Jan 10, 2005 | 01:45 PM
  #6  
-Q-'s Avatar
-Q-
TECH Fanatic
iTrader: (10)
 
Joined: Mar 2003
Posts: 1,106
Likes: 2
From: St Simons Isl, GA
Default

I think stock I-pipe is 1 3/4 inch.
Reply
Old Jan 10, 2005 | 02:33 PM
  #7  
Uno99's Avatar
TECH Resident
iTrader: (2)
 
Joined: Jul 2004
Posts: 894
Likes: 0
From: Appleton Wi
Default

mine is 2 3/4. Get a cut-out they flow the best.
Reply
Old Jan 10, 2005 | 03:28 PM
  #8  
-Q-'s Avatar
-Q-
TECH Fanatic
iTrader: (10)
 
Joined: Mar 2003
Posts: 1,106
Likes: 2
From: St Simons Isl, GA
Default

Jeez, I meant 2 3/4 inch. My bad
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 09:20 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