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Old Jul 27, 2011 | 09:09 PM
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This maybe stupid but what are they for? i just installed headers on my ls2 and was checking for leaks around the headers gaskets with a hose and i noticed i could hear a little air flow at each hole. is that normal?

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Old Jul 28, 2011 | 10:37 PM
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Originally Posted by BT03mach-1
This maybe stupid but what are they for? i just installed headers on my ls2 and was checking for leaks around the headers gaskets with a hose and i noticed i could hear a little air flow at each hole. is that normal?

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Without a picture I cannot be certain but it sounds to me like that maybe the location a sensor would be installed ? perhaps ?
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Old Jul 29, 2011 | 09:35 AM
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i was told they are just accessory holes. I just don't understand why i hear air in them.

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Old Jul 29, 2011 | 10:07 AM
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If it was leaking exhuast it would have a black residue. I can assure you that its an accessory hole and that only. One of the holes is used for the dipstick and thats all on the corvettes.
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Old Jul 29, 2011 | 10:15 AM
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ok. maybe I'm just hearing things. when i was putting the hose over the holes it sounds like i hear airflow. it sounded like that on all of them. i think 4 on each side. around the headers i didn't hear anything so i think its all sealed up good!!!

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Old Jul 29, 2011 | 10:27 AM
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Probably what your hearing is the exhaust flowing through the head since the bolt holes are much closer to the exhaust runners.
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Old Jul 29, 2011 | 11:07 AM
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I'd agree hearing illision.

Why not install a nice chrome bolt (even round Allen headed w/ round gasket) for appearance?
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Old Jul 29, 2011 | 12:06 PM
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fuel rail cover covers everything lol
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Old Jul 29, 2011 | 12:44 PM
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Just install some Chinese made headers. Those piece of craps will probably line-up nicely with the extra holes.
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Old Jul 29, 2011 | 01:32 PM
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Originally Posted by DSOMC6
Just install some Chinese made headers. Those piece of craps will probably line-up nicely with the extra holes.
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Old Jul 29, 2011 | 07:51 PM
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if it leaking air.... install a metal whistle .. so you will sound like a rice-burner turbo system
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