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

Need confirmation on some exhaust questions...

Thread Tools
 
Search this Thread
 
Old Jan 5, 2009 | 08:01 PM
  #1  
smgbad's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Dec 2008
Posts: 111
Likes: 0
Default Need confirmation on some exhaust questions...

I have a completely stock exhaust system on my 99 t/a. Thinking of adding hooker headers or Pacesetter Lt's and either a used Borla catback my firend has for $200, or a used Hooker i-pipe back muffler with tips ($200 also). Will I need to replace the stock cats and stock y-pipe or anything else, or can I pull it off with just the headers and the used exhaust? What kind of gains could I expect? Thanks alot for any suggestions and answers!

Also thinking of changing to 3.73 rear gear form 2.73... any naysayers? It's a DD so I don't wanna go 4.10. Not sure how much gas milage I'll be losing with the 3.73 over a 3.4?... Also grateful for any comments on this! Thx
Reply
Old Jan 5, 2009 | 08:05 PM
  #2  
02silvaZ's Avatar
TECH Addict
iTrader: (12)
 
Joined: Jun 2006
Posts: 2,594
Likes: 0
From: Jacksonville, FL
Default

go with the hooker headers, you will need a new y-pipe, and go with the hooker exhaust, you will be happy with this set-up. on the gear question, since you have 2.73 a jump to 3.42 will net a noticeable improvement and give a little bit better gas mileage than 3.73, just my opinion
Reply
Old Jan 5, 2009 | 08:30 PM
  #3  
SS1875's Avatar
11 Second Club
iTrader: (34)
 
Joined: Feb 2005
Posts: 3,158
Likes: 0
From: Ft. Wayne, Indiana
Default

Originally Posted by 02silvaZ
go with the hooker headers, you will need a new y-pipe, and go with the hooker exhaust, you will be happy with this set-up. on the gear question, since you have 2.73 a jump to 3.42 will net a noticeable improvement and give a little bit better gas mileage than 3.73, just my opinion

+1 on all of it.
Reply
Old Jan 5, 2009 | 08:54 PM
  #4  
Red99TA's Avatar
TECH Addict
20 Year Member
iTrader: (11)
 
Joined: Oct 2003
Posts: 2,442
Likes: 6
From: Topeka, KS
Default

You definitely will need a different y-pipe with or without cats. The 2.73 to 3.73 is a big jump. I would say try the 3.42's first as well and if you really wanted a little more you could throw in a 3.73.
Reply




All times are GMT -5. The time now is 03:24 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


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