[RocktimusPryme]

Originally Posted by Speargun

My temps climb when cruising, but when I pull up to a stop light, I can watch the temp drop from 210* +/- to 185* in less than a minute. It sounds like a turbo prop preparing for takeoff, but it does get the job done. The downside is it's not a direct fit so I had to fabricate a bit to make it work. It's expensive and requires a PWM controller. It can pull a steady 70 amps so a quality electrical system is a must.

A clutch fan & shroud did as good, or better, at cooling (for a lot less $$$), but big fans & serpentine systems DO NOT play well together so I had to move to electric.

Yeah I could see that being the trade off. Especially because big electric fans pressed right up against the back of the radiator are now restrcting air flow through at cruise.

But its the exact opposite scenario I have with the 19" clutch. Mine will sit right at 178-180 while moving but if I pull into a drive through I will watch it slowly climb. When it gets really hot in the summer, I actually adjust the idle RPM on my Terminator from 800 ish to more like 1000 because the extra fan RPM helps some at idle.


Im working on a 66 Fairlane gasser project with a 429 based 503 inch engine. I am likely just going to hack up the core support in that car to make it fit a far larger radiator than even the 390 FE Fairlanes would have gotten. Im going to be super limited in fan space on that ride so I want all the cooling area I can get. But like you said, the downside is time sunk into fabrication. And I tend to be more of a function over form guy. So Ill get it in there and working, but its highly unlikely Im going to expend the effort to make it look pretty.