correct size cooling fan for 73 charger 318

[Texas charger 73]

I'm trying to get a fan and shroud for my 73 charger,but I'm not sure of the correct size. I have a 318/904 combo. It has a 26" radiator bit there is no fender tag code for max cooling. Everything I'm finding shows all cars that were not max cooling has a 22 1/4 in radiator. I'm stuck. The shroud I think fits my radiator has a 20.25 in fan opening. So should I go with a 18 1/2 inch fan or a 20 inch fan? I'm also in Texas. Car has ac as well but not hooked up. Had flex fan when bought and Dont want to go back with that

 

[wahya]

Both my 71 Satellite and 71 parts car came with 26" radiator. Both shrouds were the same size, a little over 20" opening. The fan has about 3/8" clearance. Both cars are a/c cars, 318's and 904,for what its worth to you. Ron.

 

[Coronet 14]

On my 72 Coronet with 318 and 26 inch shroud FSM says
Diameter / Number of blades / width
Standard 18" 7 2"
Auto 18" 7 2"
A/C 18" 7 2 1/4
High Cap. 18" 7 2 1/4

 

[KingCordoba]

If you have a salvage yard anywhere near you, most any SB 318/340/360 equipped A or B body or pickup will have a shroud and fan that will fit your model. Most slant-6's will also have the same shroud/fan size, if it has A/C. Finding a solid fan in such a place won't be as easy, but any centrifugal fan can be made 'solid' with a couple judicious spot-welds. FWIW... good luck P.S., next option is to check the aftermarket catalogues, which carry electric fan options which can be fairly easily wired up, eliminating the need for having a fan bolted onto the front of the water pump. Just a thought...