Clutch fan

Sorry to resurrect this, but with everything that goes on with a fresh install, the last thing you want to worry about is overheating. To that end I would highly recommend a direct drive fan, a shroud, a restrictor washer in the stat house, a brand new pump,and pure water in the system. At some later date, after the cam break-in, and the timing and carb are bugged out, then you can start experimenting with the cooling system. With so much money invested in the engine, why take chances with a clutch fan, or a stat?
Tyler said it pretty good. I second the 26 inch rad, and the modded core opening. My little 360/430hp needed it.And a Milodon pump. And a hi-flo stat.It was many weeks before i had the timing/carb bugged out.The first few weeks temp was a constant concern, even thus equipped.Those aluminum flex fans? I cant imagine who could take advantage of their design. I have had one for more than 20 years. I think Ive tried it on about 10 vehicles. the results are almost always the same. Why bother? Its currently taking up space, somewhere deep in the back of my parts stash. A thermostatic clutch-fan, speced for a Ford currently resides on my 366.
all the best to you.