underdrive pully
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Posting Guru
Joined: May 2006
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From: Iowa
underdrive pully
Has anyone put an underdrive pully on there 4.6l f-150. i know that it obviously dosnt turn your altinator and A/C pump and Steering pump as fast, but does it really affect them that much. And what kinda perfromance was noticed from the pully. Any input would be great.
Posting Guru
Joined: Feb 2005
Posts: 1,344
Likes: 3
From: NYC
All of the stats from the alternator and water pump remain within factory specs. I noticed lots more power down low, around 1000-2200rpms after the install. The gas mileage went up around 1.6 mpg while i was floggin it! Im very happy with the upgrade.
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DictatorDanny
1987 - 1996 F150 & Larger F-Series Trucks
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Feb 1, 2005 09:28 PM
