There are several grades of electric fans available with varying CFM
abilities. You need to get one with the highest CFM you can find. Most of
the off the shelf autoparts specials don't pull enough air, not nearly as
much as a mechanical fan. If one big fan doesn't cover the full area of the
radiator get two or three smaller ones. A pusher and puller on the same
radiator can actually hurt cooling performance because the turbulance from
the blades of the pusher can ruin the efficiency of the puller and the CFM
drops more than just the puller would provide. Alternately relocate the A/C
condensor to a differant location and use a separate fan just for it.
I ran into difficulties like yours with a Willys Jeep with a Buick 225
transplant and I had to do a lot of creative fan work because there wasn't
much space between the radiator and the engine.
-----Original Message-----
From: Terry Stellman [mailto:STELLMAN@noex.com]
Sent: Friday, May 03, 2002 4:58 AM
To: 'oletrucks@autox.team.net'
Subject: [oletrucks] Radiator Fan
> I currently have a small block in my 1949 Chevy and I have a large puller
> fan behind the radiator and a small pusher in front but I can't run the
> A/C because it wants to overheat. I previously had a home made rig to run
> a mechanical fan which kept everything cool but the brackets broke twice
> so I figured it was just an accident waiting to happen. The small block
> sits very low in the engine compartment which prohibits mounting the fan
> to the front of the water pump. I have a desert cooler radiator and the
> electric fan is one the curved blade types. My question is for anybody
> else out there is how do you keep your engines cool with an electric fan
> or is there an aftermarket bracket for mounting a mechanical fan.
> Remember I am dealing with south Texas heat and humidity. Thanks for any
> suggestions.
>
>
> Terry Stellman
> 1949 3600
> Missouri City, Texas
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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