Rick- I had the same problem you're describing with my 63 Nova. Tried different fans, fan clutches and shrouds. Finally put the big $ up for a BE COOL RADIATOR and it helped lots, but in the end I needed more air flow at stopping or very low speeds. Added a dual Spal Fan and it runs 195 at the very hottest of days now. In traffic or cruising inside of Good Guy shows.

Here is my final product that now keeps it cool.
http://s104.photobucket.com/albums/m...nt=Nova007.jpg