I agree about the thermostat. I have never had a car run hotter when the thermostat was removed as they always ran cooler or the same if it has another problem. Ron

Wow! This is a lot of ideas I have to try. I did run it without the thermostat but put it back in just to try if it had any difference in temp. It had one. I love the idea of electric fans but from I'm reading, stock might be the way to go. I'm gonna work on it this weekend and I'll let you know what happens. I don't have much nice weather left in Michigan before that dreadful white stuff flys. 😞

Hey we're the best

This is a Jensen Interceptor rad fans & shroud note the simple blow through flaps,Jensen's where notorious for overheating we would recore the rad with a 4 row staggered core & install VW Rabbit/Bosch cooling fans.
http://i1119.photobucket.com/albums/k627/davefinic/PH%20Thread/photo_zps5d0a4f27.jpg

A stock type fan system has served me well with a warm 496B which is street driven and road raced. I run a re-pop thermal fan clutch and 6 blade fan. Both from Bouchillon. Also an aftermarket radiator and matching shroud. The shroud is big and open. Cooling performance on a roll is excellent. Based on data logging with an EFI setup, it holds right at 180 degree stat temp while moving. The factory gauge holds at the low end of the operating range. On a long stop in hot weather and AC running, it warms up a little but no overheating. Overall I am very happy with the stock type fan and cooling setup.

I need to clarify one point. My comment about the temp creeping to 200° on the highway is on a very warm 90° plus day. Most of the time it stays happy around 180° in reasonable temps.

Providing the tuning and all else is in order that would indicate that the radiators thermal efficiency is marginal for the application.