have you ever raced the car on a cool day, if so did you still have cooling issues?
i'm guessing the car was dyno tuned since you mentioned 330whp
It's been on a dyno, but not dyno tuned. The out of the box tune from Pro-m Works great. I did fatten WOT up a bit. 12.4-12.7. I haven't touched timing yet. The numbers it made for my combo are right where they should be. It's a 302 with TFS HCI, CIA, 75MM TB, Shortie headers, Windage tray, crank scraper, Roadracing oil pan. No AC, no Smog pump.
On cool days the car runs cooler. I could go over every change made to the cooling and what the results were but that would take too long. The big show stopper came on 90-degree day at Buttonwillow, the water (water and Redline) started to boil out of the stock overflow tank I had at the time. And I was losing coolant that way. I also had a Black Magic fan, and a 1 bar cap.
I also saw some track video of my car from the back, for that day and under certain conditions, like after Closing the throttle at 5-6k for a big break zone, wisps of vapor could be seen exiting both sides of my exhaust. Looked like steam. I ran a test for combustion gases in the coolant, and that came back negative. We guess that the lower intake manifold was loose and pulling coolant into the intake. We retorqued the lowers and the problem has not returned, to my knowledge.
TO me the sequence for this event was: Water escaping through the lower intake gasket under extreme vacuum conditions that cause air pockets to form in the water passages, which led to a boilover.
Anyway, after that, I changed to a 21psi cap and put antifreeze in there to keep the coolant from boiling (and apparently it actually freezes in Houston on occasion). Double Overkill. Then we switched to a huge dual fan off a truck, put in a huge overflow can and ran it. And that where we are today.