4 inch exhaust?

Reply Subscribe

Thread Tools

Search this Thread

Feb 21, 2005 | 10:48 PM

road_warrior

Thread Starter

Staging Lane

Joined: Oct 2004

Posts: 56

Likes: 0

4 inch exhaust?

im currently searching for what exhaust to go with. i was planning on doing something similar to the loudmouth or tsp rumbler, but was planing on using 4 inch pipes instead of 3. it will be custom made.
how many of you guys have gone with 4inch instead of 3, whats the sound like, lost or gained hp or tq?

Feb 21, 2005 | 10:58 PM

White Trash Camaro

Banned

Joined: Feb 2005

Posts: 7

Likes: 0

It all depends what muffler you go with. A 4" Bullet would be loud as ****** ****. Sweeeeeeet!

Feb 21, 2005 | 11:27 PM

goober35

TECH Fanatic

iTrader: (1)

Joined: May 2003

Posts: 1,387

Likes: 0

From: St Clairsville, Oh

I have a Hooker Headers with a 3in QTP Y with Dual cut outs to a 4in mufflex system with a Magniflow muffler. Sounds is bad ***. Some drone in the car. I dont know if i picked up or lost any TQ/HP because i installed it with my new iron 370.

Feb 21, 2005 | 11:32 PM

hc_performance

10 Second Club

iTrader: (4)

Joined: Sep 2004

Posts: 250

Likes: 0

From: memphis

IMHO 4" would prob. be overkill unless you had a whole lotta cubes!!! You would prob. loose tourque all over but it would sound mean!!!!

Feb 21, 2005 | 11:35 PM

SpdfreakLS1

On The Tree

iTrader: (2)

Joined: Dec 2002

Posts: 141

Likes: 0

From: Sacramento

I also have hookers to a 4 inch with a 3 inch straight through magnaflow. Heres how it sounds
http://67.15.56.43/~spdfreak/Videos/..._magnaflow.wmv

Feb 22, 2005 | 11:11 AM

1999nbmZ

Launching!

Joined: Mar 2004

Posts: 223

Likes: 0

From: Apple Maggot Quarantine Zone

Where do you get the 4" y-pipe and exhaust system that gmmg uses?

Feb 22, 2005 | 11:19 AM

MeentSS02

Kleeborp the Moderator™

iTrader: (11)

Joined: Mar 2004

Posts: 10,316

Likes: 6

From: Dayton, OH

What exactly is prompting you to go with a 4" pipe? The whole "bigger has to be better" thing? Just wondering...that's a pretty big exhaust to be running on these cars.

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

Verdad Gallardo

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

Pouria Savadkouei

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

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

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

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Feb 22, 2005 | 11:32 AM

MeentSS02

Kleeborp the Moderator™

iTrader: (11)

Joined: Mar 2004

Posts: 10,316

Likes: 6

From: Dayton, OH

Okay, I see where you are coming from, and it would probably be a good idea on a motor like that. Sorry I don't have any experience with it though

2.5" true duals here...

Feb 22, 2005 | 12:28 PM

#10

MIGHTYMOUSE

TECH Senior Member

iTrader: (59)

Joined: Nov 2001

Posts: 10,018

Likes: 51

From: Virginia

i run a 4" intermediate pipe to a single 4" dynomax bullet w/ turndown

getting a 4" cut out made right now

Feb 22, 2005 | 12:59 PM

#11

1999nbmZ

Launching!

Joined: Mar 2004

Posts: 223

Likes: 0

From: Apple Maggot Quarantine Zone

So Mightymouse, are you running a y-pipe setup? If so, what y-pipe. All I have seen is the 3" outlet y-pipes. Also, where did you get the 4" intermediate pipe?

Feb 22, 2005 | 01:24 PM

#12

road_warrior

Thread Starter

Staging Lane

Joined: Oct 2004

Posts: 56

Likes: 0

im not sure if mufflex makes 4 inch y pipes for LS1s but i know they make them for LT1s. you should do a little search see what you come up with. they might have them.

Feb 22, 2005 | 03:34 PM

#13

MIGHTYMOUSE

TECH Senior Member

iTrader: (59)

Joined: Nov 2001

Posts: 10,018

Likes: 51

From: Virginia

i dont have a y pipe i have a turbo.. its all different stuff, i jut thought i would chime in

Feb 22, 2005 | 11:26 PM

#14

99'Formula

TECH Regular

iTrader: (7)

Joined: Mar 2004

Posts: 438

Likes: 0

From: Fort Worth, TX

4" is not over kill. I had a Borla, Magnaflow, and True duals (all 3"). Now I have a Mufflex single 4" system with a Magnaflow. Which dynoed the exact same horsepower as the true duals and 5 less torque than true duals (Pretty empressive for a cat back if you ask me). There's your proof that 4" is not in anyway to big for stock cubes. People use two 3" pipes for true duals so why is one 4" pipe to big?
Here's some pics of my setup.

Attached Thumbnails

Feb 23, 2005 | 02:33 PM

#15

Fast Toys Performance Parts

FormerVendor

iTrader: (3)

Joined: Dec 2001

Posts: 1,638

Likes: 0

Mufflex makes the only bolt in 4 inch exhaust system for the LS1 Camaro/Firebirds. They offer two choices of mufflers being a Flowmaster Race muffler or a Spintech street muffler. A 4 inch system works great on power adder or heads and cam cars.

If people are interested, we could set up a GP