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

QTP HEADERS/Y-PIPE SALE!!! Quick installing question!

Thread Tools
 
Search this Thread
 
Old Mar 31, 2005 | 01:18 AM
  #1  
ItalianSS's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2005
Posts: 50
Likes: 0
From: New Jersey, USA
Question QTP HEADERS/Y-PIPE SALE!!! Quick installing question!

QTP is on sale at fasttoys.com, and i'm ordering them. The only issue is, the headers have a 3" collector pipe. The y- pipe is also 3", will they fit my 2 1/2 inch Borla catback? I mean couldn't i just put an extension or something to make it fit, or do i just have to change the whole cat back system again?
Reply
Old Mar 31, 2005 | 03:41 AM
  #2  
DaddySS's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,907
Likes: 1
From: Bergen County, NJ
Default

Are you sure the I pipe on the Borla is 2 1/2?
Reply
Old Mar 31, 2005 | 07:57 AM
  #3  
Ru2n00n3er's Avatar
12 Second Club
iTrader: (13)
 
Joined: Apr 2004
Posts: 1,027
Likes: 0
From: Belleville, MI
Default

On the Flowmaster Merge Collecter that sits before the I-pipe, it steps itself back down to a smaller size. I don't know what size it gets to exactly but it's smaller than the main thing. Call fasttoys.com and ask them.
Reply
Old Mar 31, 2005 | 08:41 AM
  #4  
YellowToy/A's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: May 2004
Posts: 1,016
Likes: 0
From: Northern WV just south of MD
Default

the outlet is 3" you will need a 3" cat back if you want best power. I would not go to a 2.5 after i put headers on
Reply
Old Mar 31, 2005 | 09:25 AM
  #5  
ItalianSS's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2005
Posts: 50
Likes: 0
From: New Jersey, USA
Default

Originally Posted by YellowToy/A
the outlet is 3" you will need a 3" cat back if you want best power. I would not go to a 2.5 after i put headers on
Yeah i would also want a 3" exhaust, but i got the Borla catback exhaust put on before i was even thinking about headers. To swap out exhaust like that means $$$! I can't just go out and buy exhaust like that. I got the exhaust like a good 6-8 months ago. Couldn't i just change the pipe that goes to the muffler. I can't remember what it looks like, cause i haven't been home in like 6 months! I'm out at sea right now, Navy!
Reply
Old Mar 31, 2005 | 09:34 AM
  #6  
Quick Time's Avatar
Banned
iTrader: (1)
 
Joined: Nov 2001
Posts: 1,212
Likes: 1
From: New Jersey
Default

I highly doubt you have a 2.5" catback. I dont even think that borla makes a 2.5" for a LS1. Factory pipe is 2 3/4.
Reply
Old Mar 31, 2005 | 11:21 AM
  #7  
Bad Blu Formula's Avatar
12 Second Club
20 Year Member
iTrader: (3)
 
Joined: Jan 2002
Posts: 3,593
Likes: 5
From: Houston
Default

Agreed, not possible to have a 2.5" pipe because a Borla catback is supposed to come with 3" piping for the whole idea of more power. Either way, the y-pipe will mate up fine with the I-pipe.
Reply
Old Mar 31, 2005 | 01:47 PM
  #8  
FenixSS's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Oct 2003
Posts: 1,645
Likes: 0
From: Kaneohe, Hawaii
Default

The GMMG is 3", right, or is it only 2.5"?
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 Mar 31, 2005 | 06:46 PM
  #9  
twocam99's Avatar
Staging Lane
 
Joined: Nov 2004
Posts: 50
Likes: 0
From: Medford OR
Default

Sorry, but its www.fasttoys.net not .com
Reply
Old Apr 1, 2005 | 12:32 AM
  #10  
ItalianSS's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2005
Posts: 50
Likes: 0
From: New Jersey, USA
Default

Thanks alot guys.... oh and yeah, sorry... it is www.fasttoys.net! take care, and thanks for all your help!
Reply
Old Apr 1, 2005 | 01:01 AM
  #11  
02WS6Bird's Avatar
12 Second Club
iTrader: (2)
 
Joined: Jan 2004
Posts: 3,321
Likes: 0
From: Palos Hills, IL
Default

Originally Posted by ItalianSS
Thanks alot guys.... oh and yeah, sorry... it is www.fasttoys.net! take care, and thanks for all your help!
No offense or anything but you shoulda hopped on the QTP Sale. I put in all the things i got from QTP's sale in and compared the price, QTP Shipped was over 100 cheapear then FAST Toys, was SUB-TOTALED!

QTP Rules, and i believe borla is a 3" inlet
Reply
Old Apr 1, 2005 | 01:03 AM
  #12  
Jimm's Avatar
Launching!
 
Joined: Oct 2003
Posts: 249
Likes: 0
From: Cary, NC/University Heights, OH
Default

Originally Posted by FenixSS
The GMMG is 3", right, or is it only 2.5"?
3" I-Pipe...all is good. My QTP and GMMG are happily married.
Reply
Old Apr 1, 2005 | 09:17 AM
  #13  
02WS6Bird's Avatar
12 Second Club
iTrader: (2)
 
Joined: Jan 2004
Posts: 3,321
Likes: 0
From: Palos Hills, IL
Default

Originally Posted by Jimm
3" I-Pipe...all is good. My QTP and GMMG are happily married.
MINE WILL BE TOO!!! as soon as the GMMG arrives haha, sounds like one of those mail-order brides or whatever they are called haha (sorry if i sound dumb, a we bit tipsy from last night )
Reply
Old Apr 16, 2005 | 02:47 PM
  #14  
ItalianSS's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2005
Posts: 50
Likes: 0
From: New Jersey, USA
Default

Thanks for the help guys! I'm pulling in on Monday! I can't wait to go play wiht my Car!!!
Reply




All times are GMT -5. The time now is 02:52 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