02WS6FREEBIRD

iTrader: (4)

The header flange does not completely seat with the 20ft/lbs of torque that I was told is correct, there is a little bit of fumes, I am using a factory gasket and the headers are stainless, must be a little warping of the flange I assume...what would be the best way to correct this?

jam01

i used a set of copper gaskets that were multi layered. i forget the maker of them, or if they even make them for ls engines. you could try putting a straight edge on them, maybe you could correct the problem. good luck

Steve Gunn

Take it to a muffer shop or machine shop that has a large belt type sander and "true" them.

SEMI-RETIRED

Check to make sure the bolts are not bottomed out in the holes if its close add a washer maybe. Just a thought!

TireSm0ke

iTrader: (1)

What brand of headers are they? I had this problem myself. When putting the header on thread the rear and front most bolts first.

Z28LS1camaroguy

iTrader: (3)

im having the same problem and thinking of using percys multilayered gasket to fix it, cause the factory ones arent working.

02WS6FREEBIRD

iTrader: (4)

The headers are QTP and welded to the exhaust and don't wont to cut them off, my mechanic suggested maybe using two factory gaskets, might work the same as a multi-layer, does anyone know who makes one?

MeentSS02

iTrader: (11)

The factory gasket is a multi-layer gasket...