dyno numbers from my 340 just for reference

I recall now were i got the crazy idea for running no t stat during the summer, it was my local police, lol

Back in the 80's Chrysler still ruled for police cars, somehow I got in backseat of one of those cars one night (squealing tires, got a ticket and let go), well the police never turn off their engines--or how it used to be. His temp gauge was only 120 degrees, yep. So I'm thinking the only way that could be is to have no t stat, that would make sense cause back then pd didn't have video camera's, if you fled and got away, well...so the police on chases used to just floor it flat out, for even 10 miles. Who ever engine latest the longest won, the no t stat allows better cooling at wot, at least for these old Cars, maybe its the rad design, it is different from Ford or GM at the time. Its down flow, not cross flow.

It was not a factory gauge but added on, right down below the middle of the dash, all it had, just the water temp, about 3 1/2 inches the gauge size was.

Now I think 120 is too cool but it was cool outside and the car stop for a while. Maybe driving it warmed up a bit, whatever I thought if my pd runs their Chrysler's like that, I will too. But in cold weather it needs either a t-stat or do like the truckers and block part of the rad, I used to use cardboard from, usps till I got a re built engine, now I just use a t -stat come first frost outside. .