Ed, since I richened up the carb settings (needles and jets), the temps have dropped. I no longer have glowing headers, but have just a tinge of red where the pipes touch each other. It's just that too me, they still seem hotter than plain old manifolds. The timing will be played with a little more here. I just got my tranny back and installed and I'm finishing up a few odds and ends and I'm getting close to finally put it on the road. Last summer I thought I was done but the tranny said otherwise