Headers running too hot , please help

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Feb 20, 2012 | 06:53 PM

PONTIAC SLP

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From: Middle east , Kuwait

Headers running too hot , please help

Hi , My friend installed his new LS3 engine and put into his 2007 Lumina SS , Well after installing we start up the motor and noticed the both sides headers are running too hot and the color of the headers changed to orange , After that we replaced the seals for injectors and intake and still running same , Car isn't missfiring and the idle is good .

I told my friend maybe you have bad knock sensors or timimg is retarded and has bad spark so what you guys think ?

Thanks in advance

Feb 20, 2012 | 07:16 PM

gs462

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Glowing headers are usually a sign that the motor is too lean was this motor tuned??

Feb 20, 2012 | 07:19 PM

PONTIAC SLP

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Quote:

Originally Posted by gs462

Glowing headers are usually a sign that the motor is too lean was this motor tuned??

No yet he didn't tuned .

Feb 20, 2012 | 07:30 PM

gs462

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I wouldnt run the car too much or drive it till he gets it tuned you may damage something.

Feb 20, 2012 | 07:36 PM

mbaker3

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Could be too lean or too retarded timing. It might still be burning fuel in the exhaust.

Feb 20, 2012 | 08:49 PM

02_CETA_ws6

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From: Ga.

i just ran into this problem on an older 350, what type of manifolds are on it? that was the problem with ours, cheap headers=800 degree exhaust gas, swapped headers and went to 350 degrees, just something to check, i replaced manifold and gaskets and carb. before i figured it out.