67 318 running temps in the summer
Doesn't fit as a puller unfortunately. Only got 3 inches of space. Fan runs off a painless kit with 180 on/160 off switch. Pulleys are just stock pulleys
Is it a 22” or 26” radiator?
Is it exactly 3” of space? And is that to the pulley in the center? The Ford Contour fan setup I run on my car fits a 26” radiator, and is about 3” thick at the shroud with the motors going back to about 3.5”. You don’t need much clearance on those, and they’re offset from center.
The other thing is there are several different diameters of stock pulleys, so if you somehow have a mixed set you may not have the ratio you need. If you measure the diameter of the crank and water pump pulleys that would tell you for sure.
I'm considering just running the mechanical again with the electric
You should be able to just run the mechanical fan with a shroud. You shouldn’t need both, one or the other.
That means the fan is running 100% of the time as the engine will never get down to 160 while in use except maybe in the dead of WI Winter and a 160 thermostat.
Exactly. I really don’t think that’s the best switch or thermostat set up. He’d be better off with a 180° thermostat, with the fans coming on at 195° and shutting off at 185°.
I agree about electric fans being "good enough". The problem is, most everybody buys cheap pieces of CRAP that just don't move air. You need an electric fan that moves close to or over 4000 CFM to really do the job. Just go on the Summit site and use the filters to see what fans cost that move that much air. They ain't cheap. People buy cheap hoping it'll work and it rarely does. Nothing wrong with bein cheap. Heck, I'm a total cheapskate. I have to be on a fixed income. The trick is knowing where not to cut corners and the cooling system is one of those places. If you're decent at fabbing something up, the Ford Taurus electric fans really move some air and can be had pretty cheap in junkyards. Lots of guys have had success with them and similar.
I agree, 3,000 cfm is on the lower side of what will work. But it actually seems like the issue is hot at speed, so the fan is holding its own in traffic and slower speeds.
It may just be the fan, because it’s out front, is blocking or disrupting the airflow too much at higher speeds when it should be off.