Loud Exhaust
Originally Posted by Detroitmuscle
I don't think either will quite it down much, it'll just rid it of rasp and give a different tone. Might as well switch catbcks if you want it quieter.
And I wanted to add that the Loudmouth 2 is not going to be much quieter. It still has no muffler, just a single bullet that muffles the sound barely more. It WILL still be very loud.
Originally Posted by FUN LS1
If you're running a LM, you can just get the mufflers that go with the LM II for about $70 a piece, and replace the resonators with the mufflers. Cheapest solution, and probably one of the best breathing exhausts still.
There's only one "muffler" for the Loudmouth system (not 2) and it really isn't even a muffler. It's just a bullet and it really doesn't quiet it down much. We had a stock Z with LM right next to another Z with LM 2 and there was hardly a difference to tell you a truth. There was, but it wasn't much at all.
Bottom line: LSTSS02, If you replace the resonator/bullet with a small Magnaflow, Dynomax, or Borla muffler, it will still be very loud. Those smaller mufflers added to a loudmouth will change the tone mainly and muffle it a bit, but you're still going to be pretty raucious. Even adding a catted Y-pipe to your setup won't quiet it down a ton. As I said before, if you want it quieter and not just the tone changed, you may as well just sell your LM and buy another catback. This would be the simplest thing to do. In order of quietest to loudest on your setup would probably be: SLP Dual/Dual, Hooker or SLP 2OTL, Magnaflow.... everything other than that gets pretty ridiculous with LTs and an ORY. Good luck!
I am selling my 02 SS exhaust from SLP. It came witha a sticker that says 345HP so if your interested let me know. I replaced the whole thing with a Stainless Works system. PM me if ya want
Originally Posted by ss4chad
I am selling my 02 SS exhaust from SLP. It came witha a sticker that says 345HP so if your interested let me know. I replaced the whole thing with a Stainless Works system. PM me if ya want
This guy's exhaust should be the SLP Dual/Dual. Great flowing, great sounding exhaust (mine should arrive tomorrow
). It will be the quietest catback with LTs and an ORY, but will still be loud enough to let people know it's got some power. At least I will hear if someones stealing my car good advice scotty z. My LM 1 and Lts with the cam sets off alarms when I rev next to parked cars.
I need to grow up
I'm thinking about switching to Slp dual/dual or borla if I can come up with the $$.
I WAS going to replace the resonators with the bullets, but if it makes no diff on it, then I will have to switch exhausts.
Loud exhausts are for people who didn't buy a V8.
I need to grow up
I'm thinking about switching to Slp dual/dual or borla if I can come up with the $$.
I WAS going to replace the resonators with the bullets, but if it makes no diff on it, then I will have to switch exhausts.
Loud exhausts are for people who didn't buy a V8.
TECH Enthusiast
Joined: Jul 2005
Posts: 732
Likes: 0
From: Herndon, VA
Originally Posted by Scotty-Z
Not trying to pick you apart here or anything, but just wanted to correct some of that information:
There's only one "muffler" for the Loudmouth system (not 2) and it really isn't even a muffler. It's just a bullet and it really doesn't quiet it down much. We had a stock Z with LM right next to another Z with LM 2 and there was hardly a difference to tell you a truth. There was, but it wasn't much at all.
There's only one "muffler" for the Loudmouth system (not 2) and it really isn't even a muffler. It's just a bullet and it really doesn't quiet it down much. We had a stock Z with LM right next to another Z with LM 2 and there was hardly a difference to tell you a truth. There was, but it wasn't much at all.
I heard the LM II resonator was quieter (1/2-1" smaller diameter?), so I figured the bullet muffler would be even quieter. Personally, I love the reaction on people's faces when they hear the LM at WOT, and I love even more the awesome sound just winding it out and downshifting. Next I'm going TD with LM resonators.[EDIT] Ditto on the car alarms; my wife just rolls her eyes while I chuckle a the sirens and Das Blinkin Lights.
just replace the rea rsection with a muffler setup.. you can try a bulitt muffler in place of the resonator but they are not desgined to give you a quiet exhaust so it wont do that much .... in the end it all really depends how quiet you wanna go
Fall to your knees and hail, biatch Now that I have a few Heinekens in me, i'm thinking I should keep the LM. It was raspy before i got the cam. Now, It sounds like Godzilla is coming from a mile away. I love the response I get when i'm shifting at 6K on a busy street and pedestrians fall to their knees and bow their heads. 
I'm just afraid of my foundation shifting when I cold start my car in my garage.
A turbo will make it quieter, right?
I'm just afraid of my foundation shifting when I cold start my car in my garage.
A turbo will make it quieter, right?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
TECH Enthusiast
Joined: Jul 2005
Posts: 732
Likes: 0
From: Herndon, VA
Originally Posted by TryingT/A
Now that I have a few Heinekens in me, i'm thinking I should keep the LM. It was raspy before i got the cam. Now, It sounds like Godzilla is coming from a mile away. I love the response I get when i'm shifting at 6K on a busy street and pedestrians fall to their knees and bow their heads.
I'm just afraid of my foundation shifting when I cold start my car in my garage.
A turbo will make it quieter, right?
I'm just afraid of my foundation shifting when I cold start my car in my garage.
A turbo will make it quieter, right?
You must be having a lot of fun with those 4.10's and street tires
Imagine what it could just porting the stock heads 
Courageous Rev Limit for stock rod bolts and lifters
Thread Starter
Teching In
Joined: Feb 2005
Posts: 42
Likes: 0
OK - so if i take the lm resonator out and replace it with a Borla XR1 round mufler will it sound good?
If so, which one is suggested? I went on the site and see there are a few of them.....main difference is length..........
any suggestions are helpful....
Thanks
If so, which one is suggested? I went on the site and see there are a few of them.....main difference is length..........
any suggestions are helpful....
Thanks
Noise pollution, Please Thanks fun Ls1, the lm is staying. Would rather put exhaust money toward a turbo.
Ported stock heads? I was planning to get some mongoose heads or something along the lines of 205, but would it be better to just port the stockers??<I'd still have to opt for pistons/rods, right?? The 4.10's are great all around, but take a toll on the street tires in the high rpms.
My shop told me to stick with stock rockers and lifters despite the raised rpm range. The hp curve starts to drop after 6200 rpm so I usually shift at 6K.
I have hit the 7k redline on a showoff rev, and it sounds sick!!!
Ported stock heads? I was planning to get some mongoose heads or something along the lines of 205, but would it be better to just port the stockers??<I'd still have to opt for pistons/rods, right?? The 4.10's are great all around, but take a toll on the street tires in the high rpms.
My shop told me to stick with stock rockers and lifters despite the raised rpm range. The hp curve starts to drop after 6200 rpm so I usually shift at 6K.
I have hit the 7k redline on a showoff rev, and it sounds sick!!!
TECH Enthusiast
Joined: Jul 2005
Posts: 732
Likes: 0
From: Herndon, VA
Originally Posted by TryingT/A
...Ported stock heads? I was planning to get some mongoose heads or something along the lines of 205, but would it be better to just port the stockers??<I'd still have to opt for pistons/rods, right??
). I think a lot of people under estimate what the stock LS1 heads can do hand-ported. There's a guy around here that will give you rebuilt, hand-ported heads for your set-up for $1700 and your original LS1 heads. If you want bigger than stock valve sizes you can give him a set of as-cast heads of your choosing up front.If you plan on Turbos or a 500+ hp 346 set up, then there are some weaknesses in the stock bottom end that have been noted in a lot of posts. I don't think the rods are a problem, but the pistons and rod bolts can be. I think the two biggest weaknesses are the rod bolts stretching and the ring lands on the pistons breaking. If you add forged pistons and Katek rod bolts, you might as well get some H-Beam rods while you're at it, though. I'm going to try to get away with just new rod bolts, since my goal is about 435 rwhp N/A and I won't spray it that often...(yeah, right). I won't go forged until I put a stoker kit in it or replace it with a 402.
Magnaflow is really good. normal cruising it isnt real loud, but when you really womp on it, WOW. heres a vid of LT's ORY, Magnaflow on my car at the track, at WOT of course-
Click here to see Video
Heres one of it on the street @ WOT
Click here to see Video
Click here to see VideoHeres one of it on the street @ WOT
Click here to see Video