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i have a 97 f150 4.6 i replaced with an electric fan from summit racing. of all my mods to my truck this made the most difference. i gained about 4 miles a gallon.this replacement was a single fan and made noticeable horsepower in my truck.
Do you idle a lot? Electric fan should save some gas at idle
since the engine can run slower. 4 MPG is a lot. It should also gain a few hp at higher RPMs.
[updated:LAST EDITED ON 16-Dec-02 AT 12:53 PM (EST)]How much are the fans? Is this something that somone can do in their garage with normal garage tools?
the fan i used cost 200 out of summit racing and took me around two hours total to install. it was a flex a lite fan and installation was easy to moderate