I'm using the March 2015 power and amp pullies. The smaller alternator pulley ensures full charge at idle even with the crummy 65 amp alternator. The pullies are now on my 94 Lightning that sees daily abuse.
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Russ L
'91 LX
Procharger, 3 row intercooler, extrude honed Cobra intake, Mac full Length Headers, 30# inj., 73mm C&L, 75mm tb, E303 cam, 289 rods, ported E7 heads, MSD, T-Rex w/255 lph Walbro, 5 lug conversion, Cobra R wheels, 3.27 gears and Moser Axles.
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