dumb question

[syntech]

allright as you can tell from the the title, this is kind of a dumb question, but i just had to ask. why are my headers getting so hot? Im not talking about with a hour or for that fact 5 min's of running, they get to about 600 degrees in about a 30 seconds of running at ideal and i had a friend look at it and he said its was a blockage in the exhaust somewhere but im getting more than enought at the tailpipe, or the timing is way off, which it is off but not that much, but i have not seen an exhaust get that hot that quick from a timing problem, i just wanted to get some more input on it before i go ripping out my exhaust, and any help will allways help. thanks josh