How can i quiet down my ls1?
Thread Starter
Launching!
Joined: Apr 2009
Posts: 292
Likes: 20
From: Fresno, CA
Borla looks like someone yanked it off a Lambo, there's nothin muscle about it. Besides, I'm happy with my EXHAUST, it's staying just like it is. If you have any tips relevant to the topic, let's hear em. SLP-LM is okay for his application (Stock Manifolds & stock internals)
. Throw some headers on there and the SLP LM will sound to raspy. The more mods you do the worse SLP LM's sound. That's why you Usually don't see many H/C people using it.
. Throw some headers on there and the SLP LM will sound to raspy. The more mods you do the worse SLP LM's sound. That's why you Usually don't see many H/C people using it.
idk it all depends on the engine really. my car with lts has a slight knock on startup but once its warm there is almost 0 noise, but my car only has 38k miles so that may be part of the reason.
Teching In
Joined: Jun 2009
Posts: 5
Likes: 0
yes Im a newb. 
TECH Enthusiast
Joined: Dec 2005
Posts: 510
Likes: 0
From: NW burbs of Chicago
You bought a used sports car. You may have all kinds of small problems from previous owners mods or abuse. You do not sound like a mechanic. So find one that can listen to your "noises" and give a professional opinion.
Bought mine brand new and it is quiet as a mouse.
The LS1 was built with roller rockers standard. If they are not bad, save your money for parts that you need or want. IMHO
Remember you can not fix what ain't broke!
Bought mine brand new and it is quiet as a mouse.
The LS1 was built with roller rockers standard. If they are not bad, save your money for parts that you need or want. IMHO
Remember you can not fix what ain't broke!
Last edited by KENS_SS_4; Jun 26, 2009 at 12:40 AM.
Launching!
Joined: Apr 2008
Posts: 289
Likes: 0
there's nothing muscle about Borla on an LS1?? It's a ******* straight pipe on the right side, what's not to like about it! lol
Thread Starter
Launching!
Joined: Apr 2009
Posts: 292
Likes: 20
From: Fresno, CA
Thread Starter
Launching!
Joined: Apr 2009
Posts: 292
Likes: 20
From: Fresno, CA
You bought a used sports car. You may have all kinds of small problems from previous owners mods or abuse. You do not sound like a mechanic. So find one that can listen to your "noises" and give a professional opinion.
Bought mine brand new and it is quiet as a mouse.
The LS1 was built with roller rockers standard. If they are not bad, save your money for parts that you need or want. IMHO
Remember you can not fix what ain't broke!
Bought mine brand new and it is quiet as a mouse.
The LS1 was built with roller rockers standard. If they are not bad, save your money for parts that you need or want. IMHO
Remember you can not fix what ain't broke!
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I'd try changing the oil with a high performance oil and using a good synthetic oil stabilizer such as lucas to try and quiet the valvetrain down. I've done this on several cars I've owned and it has helped a little.
Thread Starter
Launching!
Joined: Apr 2009
Posts: 292
Likes: 20
From: Fresno, CA
Cool thanks! I put the remainder of a bottle of Lucas in a month or so ago, but not much. Will try using a whole quart next oil change.
Gotcha. Unfortunately CA smog laws won't let me have the longtubes, but a Hotcam is definitely on the to-do list. I have Loudmouth II on her right now, which makes a bit of noise and sounds smooth, but the motor noise it's what I wanna smooth out. When the car comes around the corner, you hear sewing machine first, THEN exhaust. Not so cool...
Don't put ANYTHING in your oil. Modern oils have ALL the additives you need already in them.
Some like Z-max can even harm your engine......
Hey man if you want I have a set of edelbrock shorties that are carb legal that Im looking to get rid of, they havent been used ie brand new. They should be good for something.
Thread Starter
Launching!
Joined: Apr 2009
Posts: 292
Likes: 20
From: Fresno, CA
