1990 serpentine setup in my 1986

[77 K20]

It's an RF24 Motorcraft fan....typically found in 1993-97 Ford T-Birds and Mercury Cougars. It's rated at 4400 CFM on high and 3600 CFM on low. I measure 16-18 and 24-26 amps on average with used fans. I trim off the mounting ears so that it's a completely square shroud and it fits nice and snug inside the stock shroud-I use aluminum pop rivets to secure it in place. I build relay harnesses for them too.

Sorry for another dumb question- so you pop riveted it to the stock fan shroud?

 

[gmachinz]

Sorry for another dumb question- so you pop riveted it to the stock fan shroud?

Yep-3 on top and 3 on bottom.