j_ahlheim

iTrader: (2)

did you use the gasket that came with the headers or use the gm gasket? I used the gm gasket and I swear I can hear a exhaust leak but its very small only dectectable when driving. I want to know if the gaskets that came with the headers are good or do I need another brand. It was a pain the first time to install I dont want to do it too many more times. The leak sounds like a small puffing sound near the drivers feet under acceleration.

slamdlsx

iTrader: (13)

if it sounds like its under the floor board that would be where the header bolts to the y pipe.

j_ahlheim

iTrader: (2)

I thought about that and I tightened the S*^% out of those bolts but it didnt change. I used the supplied gasket from lpp on that connection but the stock manifold didnt have a gasket on it. Also remember these are shorty headers not lts so its hard to figure out if its the y pipe or the header to block

andrew383

iTrader: (14)

I reused the stock gaskets and have no leaks..

GMCtrk

iTrader: (27)

Look at the thickness of that header tubing and compare it to the stock iron manifolds. The stock manifolds are very thick to insulate valvetrain noise. That ticking/puffing noise you're hearing is normal.

j_ahlheim

iTrader: (2)

never thought of that. Does everyone one else have this same ticking and puffing from their headers?

03 True Fire

iTrader: (1)

yes ive heard the ticking noise before, and it really stood out when i put the cam in, its normal to me.

00ChevyScott

iTrader: (10)

My truck sounds like a sewing machine inside the cab.

Foxxer

I used OEM gasket too and applied small amount of thermal silicone to make things tight. Really happy.

supercharged680

iTrader: (1)

yeah i have that puffing noise ur talking about... but i assure u i have no leaks at all