IC Mixture for street

[vladSVT]

I know there are plenty of threads on this topic, but most of them are older.

Just looking to see what people run on the street/track.
My car seems to pull timing real quick (Just driving around for 20-30min in 85f weather and doing a pull it already pulls timing).
I am currently running 75/25 mixture (most of it being coolant not water).
Any guys with similar experience?

I was wondering if switching to straight water with water wetter or maybe 25% coolant and 75% water will improve the car's performance on the street?
I have a big ice box in trunk along with a Meziere 20gpm pump.

BTW I have a trans cooler with fan right in front of my heat exchanger (maybe that has an effect on running cooler, as the cooler is partially blocking the heat exchanger)

 

[BennyBoy]

I'd run 75/25 water/coolant in the radiator and IC If you can get away with it in winter in you area. If not, 50/50 should be better than what you have now too.

If you don't mind me asking, how was the 4R70 swap? You running a Mach 1 computer or a manual valve body? I'm guessing manual valve body, if so, how do you like it on the street?