I had dual 10" Perma Cool fans but they didn't do enough cooling. They flow a fairly good 900 cfm each but it wasn't enough. They cost $59 each from Jegs. The problem with the 10" fans is that the fan blade is only 9" wide. My 12" fans were $65 each and I got them at Advance Auto Parts. Their fan blades are actually 11"s so I guess every fan company list their fan size as an inch bigger. It says they only flow 800 cfm but it seems to cool a little better than before. Dual 12's are pretty much the biggest fans you can put on a 3rd gen radiator. The radiator is about 31" wide but the cooling fins only cover about 27". You could mount bigger fans if you have a fan shroud the the fans are attached to but I don't have a shroud. I just pulled the radiator out of my car and used the nylon mounting ties that the fans came with. I have 2 on/off switches inside the car so I can turn either fan on or off whenever.

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92 RS carb'd 357 5-speed T-tops maroon w/ black interior
650 cfm Double Pumper, stealth intake, dual 12" radiator fans, 204/214 cam duration @ .050", 420/443 valve lift, 1 3/4" headers, no cat, 3" PaceSetter catback w/ dual 2.5" tailpipes, 3.73 gears, posi, 245/50/ZR16's up front, 255/50/ZR16's in back
2.070 60 ft, 9.9 @ 71 (1/8), 15.4 @ 87 (1/4)<--old times
100% American (you damn right)

 

I recently installed the spal dual 11 inch setup with integrated shroud. These are definately the fans to use. www.spal-usa.com
Not cheap though

Miles

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88 427 BBC Camaro
7.76 @ 94 (1/8 mile) 10/01
12.18 @ 113 (1/4 mile) 10/99
I have brand new series 3 9 bolt posi carriers and gear sets to 4.10 available for borg warner 9 bolts. Check my web page for more info.

http://www.koolmeister.com

 

Tonight I put one of my old 10" fans in front of the radiator as a pusher. I wired it to an on/off switch inside the car also. My power steering cooler is in front of the radiator on the drivers side and the 10" fan is on the passengers side. It runs cooler than ever now and my alternator can keep up just fine with the 3 fans running all at once.

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92 RS carb'd 357 5-speed T-tops maroon w/ black interior
650 cfm Double Pumper, stealth intake, dual 12" radiator fans, 5" X 12" power steering cooler, 204/214 cam duration @ .050", 420/443 valve lift, 1.75" headers, no cat, 3" PaceSetter catback w/ dual 2.5" tailpipes, 3.73 gears, posi, 245/50/ZR16's up front, 255/50/ZR16's in back
2.070 60 ft, 9.9 @ 71 (1/8), 15.4 @ 87 (1/4) <--old times
100% American (you damn right)

 

My good old single stock fan works like a champ.

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