lookin to get n electric fan, for a midly mod, small block 350, what size and cfm would be good???

 

If ya go to www.dewits.com , you'll get some good info.
The dual fans utilize more of the radiator surface.

Heck, just go here,....
http://www.dewitts.com/pages/categor...s.asp?catID=21

I'm lookin' at P.N. SP 460.

 

This is the size of the single fan set up I had, very cost effective when teamed up with a simple adjustable fan controller wiring harness.
http://store.summitracing.com/partde...p;autoview=sku

Lots of folks opt for the dual fan set up, then do some fancy wiring on them so that one fan comes on at low temps and both fans at higher temps.

http://store.summitracing.com/partde...p;autoview=sku

Fan controllers

http://store.summitracing.com/egnsea...=KeywordSearch

To answer the CFM question - around 2000 should do. The object is to move air across as much surface area on the radiator as possible. Puller mounted configurations work better than pushers.

I ended up removing the electric fan I had installed after I switched over to an aluminum radiator and have been using the stock engine driven fan only. Temperatures are now no problem at all, even in traffic with the A/C on.

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i have a 74 by the way

 

Hey Bro',

If you are looking to save some coin, check out the universal fit radiators from Griffin. They cost about half of what the DeWitts units do. All I had to do was a little grinding to the top left radiator hold down bracket to make it "just right" and install one of those fancy stainless steel flex pipes as a lower radiator hose. I saved a few hundred and had the satisfaction of having done it myself!
I wound up finding my 2 row aluminum radiator (19" x 27" if I remember right) on ebay from southwest speed for about $165.00, that'sless than what I paid for a copper/brass radiator!

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Since I have your attention,....
Rad measure, isthe size of the core, or overall measurements?

 

Hi DeeVeeEight,

my stock auxiliary fan on radiator doesn't work because the OEM switch sending unit on the engine is broken. But I can't find the spare both at Ecklers and summit. it's a sending unit with 2 contacts , not 1: when the temp is high the thermistorinside the sending unitgoes to zero and shorts the 2 contacts together toward ground, connecting the fan.

I would like to get somewhere this unit , so to use the existing cables. The temp controls at Summit requires instead a total rewiring.

I took a ride today with my car and when back home , I have checked the temp with the temp meter in my multimeter : the temp was about 160°F. But I'm preparing myself for hotter days

some pics took today. the hood open is for show and for cooling a bit ( after showing to friends the Corvette acceleration...engine was a bit hotter than usual)

[IMG]local://upfiles/6949/982990CE60CC4F7B85C1339319B65D24.jpg[/IMG]

[IMG]local://upfiles/6949/D16FFD60D83B41A4AC81EBD1BA5F43EE.jpg[/IMG]

[IMG]local://upfiles/6949/B4A8E17B8EE0404B94B777EE89EFAE44.jpg[/IMG]

 

I got the dimensions from another forum and ordered mine - I never measured it! So I don't know if the #'s are for just the core or if they are overall #'s. I DO know the temp gauge #'s make me VERY happy now!

Here's a nice link for ya Bro' ! Check out the PRICES!!!!! The 19" x 29" is what I got for mine!
http://www.southwestspeed.com/?sec=v...t&id=18491

 

Here's what they have to say about the measurements.
[*]*HEIGHT & WIDTH DIMENSIONS ARE WHAT THE RADIATOR WILL SLIP IN, ACTUAL DIMENSIONS OF THE RADIATOR ARE ABOUT AN 1/8" SMALLER

 

My universal unit went in real easy and the stock fan shroud went right back in too. I used a few pieces of pipe insulation as cushions to check the fit.


The original radiator has this skinny lower left tank and the universal one doesn't





The fit on the left side was a little close so I simply shifted the radiator to the right about 1/2"


The completed installation, stock fan shroud and all.



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