How can i quiet down my ls1?

Revo1 · 06-21-2009, 05:00 AM

Motor's loud. I have a loud exhaust and the first thing you hear is the engine.

I know the LS1 is notorious for "piston slap" but I gotta quiet her down at least a bit. Any tips?

jcobra99 · 06-21-2009, 06:03 AM

Is the noise coming from your valve-train??? Try some aftermarket roller rockers.

gc302047 · 06-21-2009, 06:05 AM

As far as engine noise you could get a engine rebuild that would most likely quite down the car a lot because my car has engine noise and i can hear it in the car over the exhaust also.

1FST99Z · 06-21-2009, 08:09 AM

ls1's are just noisy. the more you mod them the more they sound like a sewing machine. haha.

Revo1 · 06-21-2009, 01:25 PM

HAHA sewing machine... That's the perfect description. Motor only has 66k original miles on it, and is bone stock, so I would hope it's not due for a rebuild yet... When I DO rebuild, I'll try the roller rockers tho, thanks. Is there anything I can do that doesn't require me to pull my engine? It is low mileage, and has recently had some maintenance, have a peek, it looks brand new

1FST99Z · 06-21-2009, 02:22 PM

you can do roller rockers. that will help. but I use the stock ones even on my 408 and have no issues. besides sounding like a sewing machine. haha. I have also seen ls1's run 150k and 200k before a rebuild. I dont think that is necessary unless you beat on your car a lot. heck I have 120k on mine the 408 is new and the exhaust system but everything else is stock.

ZMONSTER! · 06-21-2009, 02:44 PM

You have LT's?

What everyone else said its just the nature of this particular beast. When you go H/C its going to get even louder.

therealcreeper · 06-21-2009, 03:14 PM

I had 0 engine noise until i did lt's. thought i had an header gasket leak because the valvetrain was so loud. I guess they're thinner than the manifolds so you can hear more.

Revo1 · 06-21-2009, 07:24 PM

Quote:

Originally Posted by ZMONSTER!

You have LT's?

What everyone else said its just the nature of this particular beast. When you go H/C its going to get even louder.

LT's? H/C's? Dude, newbie here what's that?

2001taws6 · 06-21-2009, 07:42 PM

LT= long tube headers
C=cam
H=heads

squale iii · 06-21-2009, 08:26 PM

I have long tube headers, no catalytic converters, and a moroso spiral flow muffler...topped off with a cam and soon heads....don't do any that if you want it to be quiet lol.

ZMONSTER! · 06-21-2009, 11:53 PM

Quote:

Originally Posted by squale iii

I have long tube headers, no catalytic converters, and a moroso spiral flow muffler...topped off with a cam and soon heads....don't do any that if you want it to be quiet lol.

Amen.

When I had my LT's installed I thought to myself "is it really supposed to sound like this?!" The headers themselves made the biggest difference to me.

Hey OP I see your in Fresno as well. You had your LS1 long? haven't seen many stripped cars around here. Mine used to have them but not anymore.

Revo1 · 06-22-2009, 02:20 AM

Quote:

Originally Posted by 2001taws6

LT= long tube headers
C=cam
H=heads

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...

Revo1 · 06-22-2009, 02:24 AM

Quote:

Originally Posted by ZMONSTER!

Amen.

When I had my LT's installed I thought to myself "is it really supposed to sound like this?!" The headers themselves made the biggest difference to me.

Hey OP I see your in Fresno as well. You had your LS1 long? haven't seen many stripped cars around here. Mine used to have them but not anymore.

Yeah man, just moved to central CA a few months ago, bought my SS 2 months ago, it's been a hell of a 1/4! Do you know of any meets around the area? Would love to find a Camaro club that meets on a regular basis

munecorey · 06-22-2009, 03:02 AM

i barely hear my ls1 from inside the car, lately it has become a little louder though!

ZMONSTER! · 06-22-2009, 10:27 AM

Quote:

Originally Posted by Revo1

Yeah man, just moved to central CA a few months ago, bought my SS 2 months ago, it's been a hell of a 1/4! Do you know of any meets around the area? Would love to find a Camaro club that meets on a regular basis

So would I!
There isnt a whole lot going on around here!
How many people from Fresno area?

SheffyZ28 · 06-22-2009, 12:31 PM

Quote:

Originally Posted by therealcreeper

I had 0 engine noise until i did lt's. thought i had an header gasket leak because the valvetrain was so loud. I guess they're thinner than the manifolds so you can hear more.

I as well have slp lt's and slp lm1's and its almost too loud and mine does also sound like a sewing maching. anyone got any ideas on different mufflers that sounds nice and isnt extremely loud?

ZMONSTER! · 06-22-2009, 01:35 PM

Magnaflow or dynomax. Not the bullets the full size mufflers.

Revo1 · 06-22-2009, 01:55 PM

Quote:

Originally Posted by ZMONSTER!

So would I!
There isnt a whole lot going on around here!
How many people from Fresno area?

I see all KINDS of f-bodies cruisin around here, especially 4th gens, but can't find any sign of a club of any kind... I've been tryin to get somethin started thru myspace, I don't really know how else to get one goin....

www.myspace.com/camaroclubfresno

squale iii · 06-22-2009, 04:56 PM

My borla sounded great when I had it. SLP sounds like ass, you should change that first lol.