Originally posted by mikec
Hartside,
I also have a 39 Chevy 2-door sedan. I am riight in the middle of this same dilema. After mounting a Vintage Air frontrunner bracket set-up, I have exactly 3" between the water pump pulley and the radiator face. I have looked at lots of possibilities to solve this and would be happy to forward directly all the correspondance between myself and some people with lots of experience in cooling.
The bottom line right now for me is Flex-a-lite has a dual low profile 12" fan & shroud that is 2 5/8" thick. They say it pulls 2500 CFM but is only rated at 19.5 amps. I think it would take 20 amps to do this so it might be over-rated in CFM's. The other possibility is as suggested above and use a pusher fan setup. Spal makes a 12" setup that uses 2 fans and should push something like 3500 CFM's. The mechanical fan is too high but I am going to be about 450 HP and am concerned about heat. I might use a mechanical fan plus the dual 12" pushers.
I will let you know in the next few days. Still researching.
MikeC

I am running dual 11" spall fans that are a one piece unit with rubber flapps that will open as the cars goes down the road and there is more aircomming in my natural forward motion. these fans draw 13 amps each and move a claimed 2700 rpm. So far so good and the fans rarely run with the preset 185 degrees stat.. Truck has only been on the road 3 months. I run a Griffin radiator that I don't recommend the ends are epoxied not welded, not a good idea if it need repair. Ed ke6bnl