3 inch exhaust too big?

Reply Subscribe

Thread Tools

Search this Thread

Dec 17, 2004 | 01:26 AM

natronathon

Thread Starter

TECH Fanatic

Joined: May 2004

Posts: 1,030

Likes: 0

From: Wichita KS

3 inch exhaust too big?

I am planning to do exhaust as my first major mod. My plans are stainless works 3in collectors, and tsp true duals. This will be an all 3inch setup. Is this exhaust too big for my relatively stock setup. I plan to modify more in the future, but this will be it for awhile, besides maybe a tune. Any opinioins are greatly appreciated!

Thanks

Nathan

Dec 17, 2004 | 01:32 AM

SteelBallz

Launching!

Joined: Aug 2004

Posts: 297

Likes: 0

From: Memphis, TN

My buddy had the same question https://ls1tech.com/forums/generation-iii-external-engine/223299-3-too-much.html

Dec 17, 2004 | 01:52 AM

2MuchRiceMakesMeSick

TECH Senior Member

Joined: Apr 2004

Posts: 6,157

Likes: 1

From: Texas

It wont hurt. The muffler provides the backpressure. The only disadvantage I see would be ground clearance but that depends alot on the builder.

Dec 17, 2004 | 02:35 AM

silverbeast

TECH Fanatic

iTrader: (16)

Joined: Oct 2003

Posts: 1,456

Likes: 0

From: Ruffin,N.C.

I switched to the 3 inch duals over my borla set. I took it to the track and gained like 1mph and it was 30lbs lighter than the borla, After awhile i got tired of the drone and switched back. As soon as i got the borla back on i went down the road and smacked it and could tell it didnt have the same power as the duals. With the duals i could smack it in 2nd gear and spin all over the road with street tires. It never has done it since. So i think it will be fine, oh im going back to the duals. Im just going to try a different muffler this time.

Dec 17, 2004 | 03:02 AM

redrocketls1

On The Tree

Joined: Oct 2004

Posts: 164

Likes: 0

hmm wonder if i have enuff back pressure with my mac mids thru cutout or if i need to close cutout and run it thru my bandb catback???

Dec 17, 2004 | 07:20 AM

Demonicbird00

10 Second Club

iTrader: (17)

Joined: Apr 2004

Posts: 2,409

Likes: 0

From: Alloway,NJ

I just installed my Jet hot LTs and the tsp true duals !! theres enough ground clearance....Im also lowered w/ DMS springs....I think the 3" is fine...especially when/if you put heads and cam on like Ill be doing in 2 months

Good luck...are you installing headers??? if not I would recommened just getting the slp loud mouth

just my .02

-Brandon

Dec 17, 2004 | 10:06 AM

777

TECH Senior Member

iTrader: (21)

Joined: Jun 2004

Posts: 6,697

Likes: 2

From: Jacksonville, FL

yeah just watch the ground clearance

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

Dec 17, 2004 | 10:40 AM

Spdmini

On The Tree

Joined: Dec 2003

Posts: 184

Likes: 0

From: FS Arkansas

I have a 4 inch Mufflex catback and i have no problems. go 4 it

Dec 17, 2004 | 10:42 AM

#10

BoonesZ

On The Tree

Joined: Dec 2004

Posts: 104

Likes: 0

From: Bama

thats what i was thinking about hehe how could 3 inch be too big when there are 4 inches

Dec 17, 2004 | 03:55 PM

#11

Viper

12 Second Club

iTrader: (6)

Joined: Dec 2001

Posts: 4,909

Likes: 3

From: Cleveland, OH

I ran 3" exhaust ( headers cat-back etc. ) on a stock motor for 2 years; it was fine. Got rubber in 4 gears ( RAM 980 disc ).

Dec 17, 2004 | 04:05 PM

#12

777

TECH Senior Member

iTrader: (21)

Joined: Jun 2004

Posts: 6,697

Likes: 2

From: Jacksonville, FL

Quote:

thats what i was thinking about hehe how could 3 inch be too big when there are 4 inches

all depends on where you place the exhaust...if it runs under the floor pan's then it will be about an inch from scraping..add a bullet and it is touching the ground....place it in the ds tunnel and you will have 3-4" clear...

Dec 17, 2004 | 06:31 PM

#13

HotRod68Camaro

12 Second Club

iTrader: (29)

Joined: Dec 2003

Posts: 983

Likes: 0

From: San Antonio, TX

Quote:

Originally Posted by BoonesZ

thats what i was thinking about hehe how could 3 inch be too big when there are 4 inches

b/c he's talking about dual 3" not a single 4"

Kyle

Dec 18, 2004 | 01:45 PM

#14

natronathon

Thread Starter

TECH Fanatic

Joined: May 2004

Posts: 1,030

Likes: 0

From: Wichita KS

thanks guys, I appreciate the info. I think tsp true duals is the way for me!

Dec 18, 2004 | 01:51 PM

#15

Spdmini

On The Tree

Joined: Dec 2003

Posts: 184

Likes: 0

From: FS Arkansas

he can purchase oval tubing if he wants more clearance.

Reply Subscribe

3 inch exhaust too big?

3 inch exhaust too big?

Trending Topics

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

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

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

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

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

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die