[md70ss]

just helped my brother drop a 302 into his 69 camaro. when we fired it up, it took a few minutes of moving the distibutor to get it to run. my question is this, the passenger side header got super hot, to the point it was discoloring the ceramic coating. i think we may be to far advanced on the timing, but wouldnt the other header experience the same heat?

[T-bucket23]

Retarded causes heat not advanced. Also lean will glow the headers

[mopar440]

Originally Posted by md70ss

just helped my brother drop a 302 into his 69 camaro. when we fired it up, it took a few minutes of moving the distibutor to get it to run. my question is this, the passenger side header got super hot, to the point it was discoloring the ceramic coating. i think we may be to far advanced on the timing, but wouldnt the other header experience the same heat?

check for a restriction in the headder that is glowing

[Clint Cummins]

2x on what the other posters communicated.

1. ignition timing "retarded" will cause glowing headers..

2. since you only had one side glowing maybe you have got restricted exhaust on that side. i.e. mouse nest in the exhaust system, crimped exhaust pipe et cetera.

3. hook up your vacuum gauge to manifold vacuum.. if vacuum keeps trying to fall off to zero or near zero.. that would explain restricted exhaust.

[ssmonty]

Could be the intake gasket on that side is leaking/miss-aligned causing an air leak/lean condition?
ssmonty

[md70ss]

thanks for the input, I will let you guys know what I find.

[SSedan64]

That's a big NoNo , never start/breakin a fresh Engine with new Coated Headers. Coated Headers should only be installed on a well tuned Engine and they need several short temp cycles to cure which prevents flaking, peeling, & discoloring.

[md70ss]

actually the headers were not brand new they have been on the car for a couple of years, the motor was the new item. but just to let everyone know it appears all is well and the culprit was the timing being way to far retarded. once the timing issue was resolved the motor ran like a champ and the water temp. came back down to 160*. thanks for all the input this is a really cool site.