headers and Valve train noise
Thread Starter
Racer
Joined: May 2004
Posts: 414
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From: Tucson Az
St. Jude Donor '04 & '05
headers and Valve train noise
Do all headers allow more valve train noise in the cabin? Or do any of the header manufacturers use a thicker steel to keep them quiet?
thanks
pete
thanks
pete
Thread Starter
Racer
Joined: May 2004
Posts: 414
Likes: 0
From: Tucson Az
St. Jude Donor '04 & '05
Also I would figure that the Dynatech headers might be a bit quiter due to the cats reduction? Or maybe QTP's due to the many bends?
any thoughts on the quietest LT header?
thanks!
any thoughts on the quietest LT header?
thanks!
Team Owner
Joined: Mar 2002
Posts: 47,647
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From: Queens, New York Life begins at 183 mph....
St. Jude Donor '08-'09
One of the reasons why the stock exhaust manifold is much quieter is because its made out of an iron cast. LT headers are usually stainless steel or mild steel and is much thinner. There's no way you can get around it. Best thing to do is get a louder exhaust. My exhaust isn't too loud so I can definitely hear the valvetrain noise but I like the sound.
Safety Car
Joined: Oct 2000
Posts: 4,949
Likes: 10
From: Monticello MN
Originally Posted by alex1217
One of the reasons why the stock exhaust manifold is much quieter is because its made out of an iron cast. LT headers are usually stainless steel or mild steel and is much thinner. There's no way you can get around it. Best thing to do is get a louder exhaust. My exhaust isn't too loud so I can definitely hear the valvetrain noise but I like the sound.
Ed
Burning Brakes
Joined: Jan 2004
Posts: 896
Likes: 1
From: Overland Park KS
If you're running the stock valve-train and cam along with a quiet cat-back then the increased valve-train noise being emitted from the headers isn't very noticable at all. A louder cat-back and you won't hear it anyway.
Now, if you're running an agressive aftermarket cam then the valve-train noise will be more pronounced - producing that often-complained-about "sewing machine" noise.
Go to a few Corvette group gatherings and listen for yourself. Don't be swayed either way until you hear it for yourself.
Now, if you're running an agressive aftermarket cam then the valve-train noise will be more pronounced - producing that often-complained-about "sewing machine" noise.
Go to a few Corvette group gatherings and listen for yourself. Don't be swayed either way until you hear it for yourself.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
I probably should have mentioned I was running the QTP's, but didnt' want to start another "my header is better than your header" war 
They do sound different due to the Tri-Y design than a conventional header. The Dynatechs are fairly thick walled for a header from what I understand, thus their weight is more than other brands.
They do sound different due to the Tri-Y design than a conventional header. The Dynatechs are fairly thick walled for a header from what I understand, thus their weight is more than other brands.
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Burning Brakes
Joined: Feb 2004
Posts: 831
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From: Country Boys Can Survive.
Before I did the heads/cam thing, I just had the Supermaxx headers, (Dynatech), and Blackwing. I didn't notice ANY more valvetrain noise. After heads/cam, I notice the sewing machine valvetrain noise in the cabin only, and at low rpm's only.
