No you don't need one, but it's the best tool for the job. I used a vise grip on the old alt. pulley to keep it from turning, but that pulley is now trash. Maybe if I'd wrapped a strip of rubber around the pulley before the vise grip it might have been salvageable. You could probably go to a garage and have them remove and replace the nut when you change pulleys for a few bucks or even for free if the guy is cool. Ought to take all of 2 minutes. Just a thought. BTW you don't really need the alternator pulley on it's not really going to improve your performance and if you have a nice stereo or plan on putting one in remember the new pulley doesn't give you much juice at idle. When I sit at a light at night my lights dim and the volts go way down and I have the stock stereo and no foglights or accessories hooked up.
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91 LX 5.0
Z t-5, 3:73 gear, Vortech 73mm Mass Air, Accufab 65mm TB, BBK underdrives, Crane HI-6S Ignition, BBK unequal length headers, Bassani x pipe, 2.5" Dynomax Super Turbo cat back, Kenny Brown Super Subs, Factory Five Control Arms, Mac cold air kit and more to come!
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