I've been tweaking my tq on my 360. I went from a wot a/f of 10.6-8 to now having a 12-12.2 a/f. Cruise a/f is 15.+/- . Previous 1/4 time was 13.8, what do you think I'll pick up?
My money is on the t-stat installed upside down. No other reason for an engine to over heat in 2-3 mins. at idle. If that don't work, call Summit back and order a 528 hemi, that'll fix your overheating problem...hehehe