I run a Summit brand radiator. This year in 90+ degree weather when I drove my D50 to the track, 40 miles round trip. I did not even have to turn my fan on.It got to about 185*. I was not in red light traffic. I was driving back roads running 45-55 mph.

1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...