[vettestr]

Hats off to the collective wisdom available here on the site. I know I leaned on the things being done as a sanity check and a few new tricks too. I was able to get 540 inches to live on the t-stat in Phoenix traffic at 110+ outside, but it took some work.

The Lincoln/Taurus 2 speed fan and posts by Elmariachi helped push me over the goal line. It does pull a few amps on high speed but I had plenty of power to spin the alternator after I kept her from overheating.

It sounds like you are close to meeting the cooling needs but still a little short. Try rolling up a couple of beach towels and prop open the hood a few inches. Place the towels under the hood near the windshield and take a test trip down the road. If allowing a little more air through the rad. and out of the engine bay drops the temp a few degrees then you know you just need more air flow.