[rblong]

Yes, I was getting 400 or so at collectors (measured with infrared and I was getting a little bounce cause of the reflection off the steel). I got a good solid reading off cast heads ports and all cylinders were 420-430, except one port was 30 or 40 degrees cooler. I am curious why one was cooler than all the rest. This was at 180 degree engine temp idling at 800.