I got a 1966 mustang. It is a 6-cylinder that was converted to a V8 289. It needed a bigger radiator because it overheated with the old radiator made for a 6-cylinder. So, I put a three-row radiator in it. It has a flex fan with a 3" spacer.
The problem is, the 3" spacer places the front of the fan just a little more than 1/2" away from the new radiator! About 5/8" total. Man, that is close! If I use a 2-1/2" fan spacer then it's going to be 1/2" from the bolt on the air-conditioning pulley (from behind). Not much room for leeway!
So is a flex fan to close to the radiator if there is only 5/8" space between them? Do flex fans flex FORWARD? Or, do they just flex flat? Egads, I'm scared to start her up! LOL.