[wesmigletz]

If you have a big cam I would run mre initial advance and limit your total. Try bumping your initial time up, should let you back off the idle speed screw. The higher timing wont make you run hotter, it may actually help with your temps. Closing the idle speed screw will help with your dieseling.

Also make sure your timing is advancing with RPM

I run 12* initial, 38* total with my low compression 350 with comp 262xe cam. I ran 20* initial, 36 total in a 383 with a 282hr cam, with 9.8:1 compression and AFR heads. Both idle fine in gear and work with stock radiators.