Originally Posted by Snoopy
the stock manifold is a heavy cast iron piece and gets really hot hence the need for heatshields in the first place. aftermarket headers are made of tubular steel. some are ceramic coated or have some other form of heat coating. so i'd venture to say they will run cooler than stock, but its not like i've checked how hot they get. just an assumption. :dunno:
Okay, thanks, last time i looked mine didnt look cast iron though. They almost looked like a dulled shine on them.