how many cfm does a dual fan have?
Thread Starter
Supreme Member
iTrader: (1)
Joined: May 2001
Posts: 1,638
Likes: 0
From: Greenwood, Indiana
Car: 1984 Trans Am
Engine: Vortec 355
Transmission: TH-700R4
Axle/Gears: GM Axles and GM 3.73
how many cfm does a dual fan have?
my bro wants to get one for his 73 Nova and he wants to know if it will b able to cool it enough.....thanks
Senior Member
Joined: Jul 1999
Posts: 811
Likes: 5
From: Maple Grove MN USA
Car: 1984 Z28 Camaro
Engine: H.O. 355 NOS
Transmission: 700R4
Well, I don't know but I wish I did. My 84 Z28 has one big fan and I wish I knew the CFM of that fan also. I was going to remove the clutch fan on my 99 Durango and Install an elect. fan, so I called around and I found this guy that said I would need at least 4500 CFM for a 5.9L eng. Is there anyone out there that knows any fan CFM spec.???
Auggie
Auggie
Supreme Member
Joined: Jun 2001
Posts: 3,175
Likes: 1
From: Bedford, Tx
haha, good luck finding out the answer to this question.. i asked it a long long time ago, and never got even a close answer.. I think it was estimated around 2500 CFM EACH though. this is the third time someone has brought this up that i remember, and no luck so far.. I really hope though that someone knows. Cause id LOVE to know also..
good luck
good luck
Supreme Member
Joined: Jan 2001
Posts: 1,411
Likes: 3
From: Rock Hill, SC
Car: 1999 Pontiac T/A Firehawk
Engine: ***'s Engine
Transmission: T56
No clue. I can tell you they take between 20.00001 and 24.9999 amps* if you kick both on at the same time though. 
Note: Empirically determined by watching a 20 amp fuse blow and a 25 amp fuse not blow.
Note: Empirically determined by watching a 20 amp fuse blow and a 25 amp fuse not blow.
Member
Joined: Feb 2002
Posts: 136
Likes: 0
From: Bradenton, FL
Car: 89 GTA
Engine: 5.7 TPI
Transmission: 700R4
aftermarket fans will tell you the CFM (at least what the manu says they are) but for stock fans I have no idea. I would guess around 2500 for a single.
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