[coolhandcountry]

Well my brother had an 8L. It was hard to keep his motor cool. The 16 66 gearing sounds right. A heat sink clamp will help right much. If you have a temp checker that is the best way to check the temp. I think they supposed to run a little bit of timing. I can't recall how much though. I will try to flip thru one of my books I have and see. I will let you know from there. Gear your truck at 16 66 and put 2 steps of timing in it and test it out to see if it is cooler or hotter.