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Old 05-13-2011, 03:52 PM   #15
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Originally Posted by Tshepp View Post
Glad to hear Im not the only one experiencing this. It is so annoying!! I just installed my headers last weekend and I swear I have crawled under the car 5 times looking for leaks but still have not found any :( At low RPM or at low speed when I put the car in a higher gear and give it gas it sounds like the valves are really loud and I could swear there is a leak but just dont see it....I am bringing it into the exhaust shop this weekend just to have them check the welds and see if they can sniff anything out.
what will be more annoying is when the exhaust shop finds nothing either...I brought mine to 3 different places. Just more BS for having an L99...
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Old 05-13-2011, 06:24 PM   #16
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what will be more annoying is when the exhaust shop finds nothing either...I brought mine to 3 different places. Just more BS for having an L99...
I have an LS3 tho...
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Old 05-14-2011, 06:26 AM   #17
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If you have someone lightly accelerate the motor while you are under the hood you should be able to see/hear if you have an exhaust leak. I would definitely check that since you did not use the supplied gaskets.
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Old 05-14-2011, 06:40 AM   #18
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off subject kind of.... im gonna be installing bbk headers soon..should i use the gasket they give me or should i use the stock gasket? which ever one i use..do i just swap them out or do i have to put grease on them or anything?
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Old 05-14-2011, 06:42 AM   #19
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Mine ticks, was sorta loud, added cam got a little louder! Asked the cam installer if that was normal he said yes! He stated the LS motors are also called "sewing machine motors" that is why they tick and they all do it to some degree!

Just the noise that comes along with the Headers. They are not as thick of metal as the stock ones!
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Old 05-14-2011, 07:07 AM   #20
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When I had mine, l was paranoid thinking I had leaks and valve failure and when I step on it amplified the noise, at first when I got the headers it was not as laud but then, I began paying more attention and was thinking the worst, Aldo I hated the dam drone, but now I miss the loud tone, guess its hard to have both
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Old 05-14-2011, 07:40 AM   #21
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Headers have a distinctive sound, kind've like a tik, but different. I had LT's on the goat and have 'em on the Z, both make the same sound, especially with a lumpy cam. A guy in an S2000 was chatting with me at a light while I was in the Z, but before the cam swap. He could tell that I had long tubes, just by hearing that "sound".
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Old 05-14-2011, 08:15 AM   #22
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Header noise

It is normal, every LS engine that I have listen to has had the old tick,tack,clack sound and the headers amplify the sound. I have an LS3 and I notice the noise more when the engine is hot and at idle also, cruising through town next to a high sidewalk will amplify the noise.
Hope this helps.
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Old 05-14-2011, 09:30 AM   #23
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Yes, you will hear a lot more engine noise (especially in the 2k-3k rpm range) after getting long tubes.
Whatever noise your engine natually makes, the headers just magnify it.
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Old 05-14-2011, 10:56 AM   #24
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why do some peoples think you shouldn't use the factory header gasket
It is one of the best gasket you can use and always should use factory gm gasket.
Isn't kooks gasket almost the same design as factory?
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Old 05-14-2011, 11:02 AM   #25
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why do some peoples think you shouldn't use the factory header gasket
It is one of the best gasket you can use and always should use factory gm gasket.
Isn't kooks gasket almost the same design as factory?
From what I've been told, the factory header gasket is superior to the Kooks' gasket.
But this information is coming from a local performance shop.
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Old 05-14-2011, 11:26 AM   #26
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Originally Posted by SGOS252382 View Post
From what I've been told, the factory header gasket is superior to the Kooks' gasket.
But this information is coming from a local performance shop.

I was told the same from the vendor I ordered my kooks from
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Old 05-14-2011, 12:06 PM   #27
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Old 04-23-2015, 08:01 AM   #28
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I installed LT headers and I also started hearing ticking sound under the hood. Seems like it's coming from the headers gaskets area on both sides. I also can hear it getting louder as I give it gas. Is this something to worry about or is it how the engine sounds with headers?
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