CK5
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how hot should headers get?

Glowing at a load is normal. Glowing at idle means something is wrong or they are some paper thin headers.
 
Glowing at a load is normal. Glowing at idle means something is wrong or they are some paper thin headers.

Idle they dont glow. But give it revs just sitting in the driveway the temps start to climb and they begin to glow.
 
are you noticing the tbi firing erratically or is it smooth? how many degrees total advance is the distributor getting from the mechanical weights at thos lower rpm.

you can usually smell if its running rich enough to continue a flame front in the pipes. And you wouldent have that bog you are describing as tbi do not have squirters. Normally a tbi thats running to rich will have a good snap on the throttle then die off if its lean it will get a faster volume of air that leans it out further.

what system are you useing to tune this with or is it stock tbi ecu?
 
are you noticing the tbi firing erratically or is it smooth? how many degrees total advance is the distributor getting from the mechanical weights at thos lower rpm.

you can usually smell if its running rich enough to continue a flame front in the pipes. And you wouldent have that bog you are describing as tbi do not have squirters. Normally a tbi thats running to rich will have a good snap on the throttle then die off if its lean it will get a faster volume of air that leans it out further.

what system are you useing to tune this with or is it stock tbi ecu?

He is FI so there are NO weights involved.
 
are you noticing the tbi firing erratically or is it smooth? how many degrees total advance is the distributor getting from the mechanical weights at thos lower rpm.

you can usually smell if its running rich enough to continue a flame front in the pipes. And you wouldent have that bog you are describing as tbi do not have squirters. Normally a tbi thats running to rich will have a good snap on the throttle then die off if its lean it will get a faster volume of air that leans it out further.

what system are you useing to tune this with or is it stock tbi ecu?
Idle is 16-18 degrees and I think I maximum 0f 34 degrees. There are no mechanical weights its entirely electronic and controlled by the ecm.

The bog is about a 1-2 second bog only from fully closed throttle to wide open throttle.

I have no idea what system is being used to tune I'm not doing the tuning. But the ECM is stock just the ROM code is what is getting changed.

I'm asking all these questions cause I dont know what really to expect with GM trucks. So the more I know the more I can feed back to the person doing the tuning. I still eventually intend to get the thing on a dyno. But would like to get things running fairly well before it rolls on a dyno.
 

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