New Headers and welded on exhuast - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Daniel6210 · 02-16-2017, 03:01 PM

I recently bought some headers and i installed them myself and i made sure the manifold bolts were on there good. i then took my car (with open headers lol) to exhaust pros and had them weld my pipes together and then bolted to ball and socket flange header connection. Ever since then i have been tracking down a so called "leak". i found a tiny hole by one of the mufflers, but it made no change to sound. So i took it back to exhaust pros to check for leak but he said it was just valve tick sound comming through the exhaust system, and it was just louder because the pipes are thinner, but the pipes are not that much thinner, (btw they are made of caoted mild steel). So i took it to brakes plus because i have a friend there and we checked for leaks together with a shop rag, but nothing was found and he tod me the same thing as exhaust pros. But it just sounds like an exxhuast leak. Is the Ls3 well known for having loud exhaust ticking with headers? or something else? If so is there any way to fix that?
sound at https://youtu.be/0e6CzOBxbzk

Black_SS10 · 02-16-2017, 03:17 PM

Sounds normal. These LS engines have loud valve train stock and headers exacerbate that sound.

Daniel6210 · 02-16-2017, 03:27 PM

Quote:

Originally Posted by Black_SS10

Sounds normal. These LS engines have loud valve train stock and headers exacerbate that sound.

So is there anyway to quiet it down because it doesnt sound good under load it sounds ike a leak?

Black_SS10 · 02-16-2017, 03:39 PM

Take off the headers and put the cast manifolds back on and it will quiet it. Headers are thinner than the cast manifolds and allow for more noise.

How does it sound under load? Plus what is your exhaust setup?

NABeastRR · 02-16-2017, 04:03 PM

I had just cat back loved the sound just wanted louder and meaner. Got new headers chased exhaust leak for weeks taking it on and off re tighten up re angle everything I could try. asked a few friends and researched here and pretty much LS engines sound like shit with headers is all there is too it as I have no black spots showing leaks and even did vacuum test and nothing. SO put cast irons back on if you cant live with it.

Daniel6210 · 02-16-2017, 04:04 PM

Quote:

Originally Posted by Black_SS10

Take off the headers and put the cast manifolds back on and it will quiet it. Headers are thinner than the cast manifolds and allow for more noise.

How does it sound under load? Plus what is your exhaust setup?

took another vid where i pass by a fence so u could hear it the most
3 in manzo

NABeastRR · 02-16-2017, 04:05 PM

btw I will probably dynomat from lower firewall to under my seat to help reduce this sound inside.

Daniel6210 · 02-16-2017, 04:05 PM

Quote:

Originally Posted by NABeastRR

I had just cat back loved the sound just wanted louder and meaner. Got new headers chased exhaust leak for weeks taking it on and off re tighten up re angle everything I could try. asked a few friends and researched here and pretty much LS engines sound like shit with headers is all there is too it as I have no black spots showing leaks and even did vacuum test and nothing. SO put cast irons back on if you cant live with it.

Did u keep on the headers?

NABeastRR · 02-16-2017, 04:14 PM

yessss 30-50 hp is way more important than sound lol

Daniel6210 · 02-16-2017, 04:21 PM

Quote:

Originally Posted by NABeastRR

yessss 30-50 hp is way more important than sound lol

That is a great answer!! I will keep it that way then. I dont have a tune on it it would probably be more potent with a tune. And i mostly hear it when window is open so dynomatt might not help me.

P.S. Do u think exhaust wrap would add some insulation and quiet it down?

InFiD3ViL · 02-16-2017, 04:49 PM

Quote:

Originally Posted by Daniel6210

took another vid where i pass by a fence so u could hear it the most
3 in manzo

That sounds more like your CAI to me.

chuckie669 · 02-16-2017, 05:20 PM

I just put my lt on last night and it sounds like a sewing machine. But so did my g8 and trans am.

I have a video of my neighbor telling me where the sound is coming from If your interested in comparison but until i see indication of a leak I'm sure it's the same noise I've always heard.

Daniel6210 · 02-16-2017, 06:02 PM

Quote:

Originally Posted by chuckie669

I just put my lt on last night and it sounds like a sewing machine. But so did my g8 and trans am.

I have a video of my neighbor telling me where the sound is coming from If your interested in comparison but until i see indication of a leak I'm sure it's the same noise I've always heard.

Ya id like to see the video

NC_SS · 02-16-2017, 06:31 PM

Quote:

Originally Posted by Daniel6210

took another vid where i pass by a fence so u could hear it the most
3 in manzo

I don't have a vid to give you a comparison but that sounds like valvetrain noise making it through the stainless steel to me

It's normal, I had literal hissing on decel, like someone whistling, and I just had a clamp too far back. Once I fixed that the issue went away.

If you're worried about leaks, JB weld is a rather permanent fix

02-16-2017, 03:01 PM	#1
Daniel6210 Drives: 2010 camaro maroon ss rs Join Date: Jan 2017 Location: Denver co Posts: 15	New Headers and welded on exhuast I recently bought some headers and i installed them myself and i made sure the manifold bolts were on there good. i then took my car (with open headers lol) to exhaust pros and had them weld my pipes together and then bolted to ball and socket flange header connection. Ever since then i have been tracking down a so called "leak". i found a tiny hole by one of the mufflers, but it made no change to sound. So i took it back to exhaust pros to check for leak but he said it was just valve tick sound comming through the exhaust system, and it was just louder because the pipes are thinner, but the pipes are not that much thinner, (btw they are made of caoted mild steel). So i took it to brakes plus because i have a friend there and we checked for leaks together with a shop rag, but nothing was found and he tod me the same thing as exhaust pros. But it just sounds like an exxhuast leak. Is the Ls3 well known for having loud exhaust ticking with headers? or something else? If so is there any way to fix that? sound at https://youtu.be/0e6CzOBxbzk Attached Images

02-16-2017, 03:17 PM	#2
Black_SS10 SomeguyK Drives: 2010 Black 2SS/RS Join Date: Nov 2014 Location: FL Posts: 1,947	Sounds normal. These LS engines have loud valve train stock and headers exacerbate that sound. __________________ TMS 427, Dart iron Block, Forged assembly, Frankenstien heads, AGP TT 62/62 BB turbo's, AGP/Fore triple fuel system, Tilton clutch, Holley 1 7/8 shorties, Technostalgia tail lights,Oracle, Aeroforce, MGW shifter,Flowmaster, Pegasus subframe bushings,BMR trailing & toe arms,Z28 UCA bushings,Zl1 rear sway bar,Prothane,BMR,Goodridge brake lines,Ridetech HQ coilovers,3.91,Trutrac,billet caps,DSS axles,HE offest,built TR6060,1LE diffuser,Havoc spoiler,SSclones,20in MRR 017, Pirelli P Zero, Nitto NT555RII More to come.

02-16-2017, 03:39 PM	#4
Black_SS10 SomeguyK Drives: 2010 Black 2SS/RS Join Date: Nov 2014 Location: FL Posts: 1,947	Take off the headers and put the cast manifolds back on and it will quiet it. Headers are thinner than the cast manifolds and allow for more noise. How does it sound under load? Plus what is your exhaust setup? __________________ TMS 427, Dart iron Block, Forged assembly, Frankenstien heads, AGP TT 62/62 BB turbo's, AGP/Fore triple fuel system, Tilton clutch, Holley 1 7/8 shorties, Technostalgia tail lights,Oracle, Aeroforce, MGW shifter,Flowmaster, Pegasus subframe bushings,BMR trailing & toe arms,Z28 UCA bushings,Zl1 rear sway bar,Prothane,BMR,Goodridge brake lines,Ridetech HQ coilovers,3.91,Trutrac,billet caps,DSS axles,HE offest,built TR6060,1LE diffuser,Havoc spoiler,SSclones,20in MRR 017, Pirelli P Zero, Nitto NT555RII More to come.

02-16-2017, 04:03 PM	#5
NABeastRR Drives: Camaro Join Date: Aug 2015 Location: FL Posts: 134	I had just cat back loved the sound just wanted louder and meaner. Got new headers chased exhaust leak for weeks taking it on and off re tighten up re angle everything I could try. asked a few friends and researched here and pretty much LS engines sound like shit with headers is all there is too it as I have no black spots showing leaks and even did vacuum test and nothing. SO put cast irons back on if you cant live with it. __________________ 15 Camaro 2SS/RS 13.3@106 100% stock 12.0@114 VR-DRX/RCR manifold/BW stg2 TB/2"ARH w cats/3"Corsa extreme/Fasterproms tune/MT Street R AGP TT build in progress

02-16-2017, 04:05 PM	#7
NABeastRR Drives: Camaro Join Date: Aug 2015 Location: FL Posts: 134	btw I will probably dynomat from lower firewall to under my seat to help reduce this sound inside. __________________ 15 Camaro 2SS/RS 13.3@106 100% stock 12.0@114 VR-DRX/RCR manifold/BW stg2 TB/2"ARH w cats/3"Corsa extreme/Fasterproms tune/MT Street R AGP TT build in progress

02-16-2017, 04:14 PM	#9
NABeastRR Drives: Camaro Join Date: Aug 2015 Location: FL Posts: 134	yessss 30-50 hp is way more important than sound lol __________________ 15 Camaro 2SS/RS 13.3@106 100% stock 12.0@114 VR-DRX/RCR manifold/BW stg2 TB/2"ARH w cats/3"Corsa extreme/Fasterproms tune/MT Street R AGP TT build in progress

02-16-2017, 05:20 PM	#12
chuckie669 Drives: 2011 ss Join Date: Sep 2015 Location: E-TX Posts: 764	I just put my lt on last night and it sounds like a sewing machine. But so did my g8 and trans am. I have a video of my neighbor telling me where the sound is coming from If your interested in comparison but until i see indication of a leak I'm sure it's the same noise I've always heard.