[bobcowan]

I'm using an older single pass double row radiator, built by Griffin. I use a large Spal fan, and a stock Mustang shroud. I run 25% anti-freeze, 75% tap water, and a bottle of Water Wetter.

My engine makes around 600 dyno proven hp; 514hp on the chassis dyno. The only time I have trouble with heat is in stop and go traffic, when the temps are near 100*. It's never actually overheated, but temps can climb up to 210-215*.