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Old 03-03-2008, 01:07 PM
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Question 03 lightning PULLEY

What Would Best Suit My 03 Lightning Upper Or Lower
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Old 03-03-2008, 01:18 PM
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Lower. With an upper you run the risk of damaging the blower, you'll be more prone to belt slip, and its a PITA.
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Old 03-03-2008, 01:19 PM
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Lower is better.

Upper requires a pulley-press to remove and install and you have to be careful not to damage the bearings. Also, since an upper pulley reduces surface area they are more prone to belt slippage.

With a lower pulley a boost increase actually reduces slippage. Plus, its easier to swap (15-20 minutes). You can also buy a "quick change lower". With those, you install a special bracket on the crank, and then special pulley's of different sizes (one for the track, one for the street, one for a road-trip/mileage, etc.) can be quick swapped on it in about 5 minutes.
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Old 03-03-2008, 01:19 PM
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Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150

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02, 2003, blower, davidson, f150, harley, install, lightning, lower, pulley, removal, remove, roush, specs, stock

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