Double pass vs Single pass radiator

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May 25, 2007 | 10:41 AM

Phil99vette

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Double pass vs Single pass radiator

Any of you guys running double pass radiators? I am looking at them now because I heard that they cool better.
Phil

May 25, 2007 | 10:43 AM

1fastWS6

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I have a double pass Ron Davis rad. in my '68.....and yes, the double pass is supposed to cool better.

Craig

May 25, 2007 | 01:04 PM

ls1 joe

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I have a AFCO double pass in my car and it cools better than the stock one did. It is a AFCO radiator. The one I have is for a dragster, it is tiny. 3inch wide 24 inch width and 13,5 tall I think is the dimensions. I can let the car idle and it will never get over 160 with the fan on.

May 25, 2007 | 02:02 PM

DMH Fabrication

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Quote:

Originally Posted by Six Speeds Inc.

what cfm fan are you running on your car?

May 25, 2007 | 05:42 PM

mrdragster1970

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From: Illinois, RT 66 dragway area

.

Good choice, same weight, same size, better cooling.

.

May 25, 2007 | 08:26 PM

ls1 joe

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1700cfm I think it is a Spal fan, I tried the Flexalite fans and they would last about 10 passes and break the blades. The Spal fans are expensive, at twice the cost of a flexalite fan. I think my fans is a 14 or 15 inch fan. I will look for the part number.

May 27, 2007 | 07:09 PM

DMH Fabrication

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Quote:

Originally Posted by Six Speeds Inc.

Thanks for the info. I'm runnign a perma-cool 3000 cfm pusher fan with a shroud and can't seem to keep my car under 200 at idle with a 160 stat and a big afco dual pass radiator. I guess i need to add a puller fan on the backside also.

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