Author Topic: Enough CFM? (Read 7144 times)

cyris426 · « **on:** February 01, 2015, 08:21:12 PM »

Hey guys,

I have a 1984 GSL-SE that i put a ford 302 into. I am looking at cooling it and am curious what CFM fan is needed. The rad core is 11inch by 23inch and is a 3 core. I am looking at a fan that will fit on the core (11x23) and can pull enough air. I plan on building a shroud also. It is a stock 302, prolly makes 250 or so torque and 150 or so horsepower. There is 2.7 or so inch's of clearance in between the electric water pump and the rad which limits the size of fan.

I am looking at this fan: http://www.jegs.com/i/SPAL/063/30100364/10002/-1?parentProductId=2861424

Is this going to be enough CFM with a shroud? Or will i fall short in hotter temps? Summer gets about 30 or so Cecilius here.

Thanks

spacevomit · « **Reply #1 on:** February 01, 2015, 09:05:21 PM »

Static pressure is more important than CFM for a cooling fan.

zbrown · « **Reply #2 on:** February 01, 2015, 09:08:24 PM »

Look at the amp draw of a fan if you want an idea of its capacity. Don't believe crap you read on flow rates

spacevomit · « **Reply #3 on:** February 01, 2015, 09:38:09 PM »

^Agreed. Some companies give a graph of CFM amperage and pressure.

cyris426 · « **Reply #4 on:** February 01, 2015, 10:22:33 PM »

They say that fan is 7 AMPS.

gnx7 · « **Reply #5 on:** February 01, 2015, 11:32:38 PM »

A Ford Taurus Fan supposedly pulls 4000 cfm. I have a 60amp relay on mine.

I would ping the other V8 FB guys to see what they run before buying anything. That is a small dimensional radiator... but 3 core is good!
Not many 10" fans that fit your core are going to pull much at all.

cyris426 · « **Reply #6 on:** February 02, 2015, 09:53:50 AM »

How do i ping them? What does that mean?

Thanks

zbrown · « **Reply #7 on:** February 02, 2015, 09:59:22 AM »

7 amp isn't gonna do shit. Find something else. An OEM app fan is usually your best bet

cyris426 · « **Reply #8 on:** February 03, 2015, 12:25:05 AM »

That's as good as i can get for that low profile. There is only 2.6 or 2.7 or so of clearance in between the rad and the water pump. Any other ideas?

cyris426 · « **Reply #9 on:** February 03, 2015, 12:34:09 AM »

http://www.etrailer.com/Radiator-Fans/Derale/D16112.html

What about this one? It is rated at 14 amps and is low enough profile to fit

Bowtie7 · « **Reply #10 on:** February 03, 2015, 10:01:04 AM »

Ive been using fbody fans forever and had great success with them. I run a 30A relay on each fan. FC's will not overheat in stop and go summer traffic with a/c on. Temp never above 210.

spacevomit · « **Reply #11 on:** February 03, 2015, 10:24:50 AM »

What they say about electric fans not using engine power is false. It just happens at the alternator.

cyris426 · « **Reply #12 on:** February 04, 2015, 10:35:57 AM »

What is an fbody fan? Also, the electric fan is a must since there is very limited room for clearance without modifying the large bar that runs from side to side near the front of the car.

cyris426 · « **Reply #13 on:** February 04, 2015, 10:38:11 AM »

http://www.etrailer.com/Radiator-Fans/Derale/D18214.html

This one has high amp rating and may just barley fit.

cyris426 · « **Reply #14 on:** February 13, 2015, 12:46:55 AM »

Anyone know anything more about this? Cant get this car to drive without a cooling system working.

Author Topic: Enough CFM? (Read 7144 times)

cyris426

Enough CFM?

spacevomit

Re: Enough CFM?

zbrown

Re: Enough CFM?

spacevomit

Re: Enough CFM?

cyris426

Re: Enough CFM?

gnx7

Re: Enough CFM?

cyris426

Re: Enough CFM?

zbrown

Re: Enough CFM?

cyris426

Re: Enough CFM?

cyris426

Re: Enough CFM?

Bowtie7

Re: Enough CFM?

spacevomit

Re: Enough CFM?

cyris426

Re: Enough CFM?

cyris426

Re: Enough CFM?

cyris426

Re: Enough CFM?