i had a 1960 chevy pickup with a 350.
it had a small 3 core with no shroud. it got too hot in the summer.
i put in a 4 core with a shroud and added some water wetter. it made all the difference in the world. i regularly go up very steep hills( the kind big rigs can only go 15 mph up) in 100+ temps.
after the swap it staye dway cool. no good for winter though. never got that hot! my heater didn't work so good.
- Also a justin h.