LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Underdrive Pulley

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Old Apr 23, 2008 | 12:03 PM
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Default Underdrive Pulley

Where is the quickest place I can get an alternator underdrive pulley from? Is there a sponsor that can mail one fast or would a local place like Autozone or Advanced sell one?
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Old Apr 23, 2008 | 01:50 PM
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wouldn't you want an overdrive pulley, you need your alt to put out some juice.
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Old Apr 23, 2008 | 01:59 PM
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You won't gain from that pulley enough to justify buying it.
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Old Apr 23, 2008 | 03:43 PM
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Originally Posted by sweet-94z28
You won't gain from that pulley enough to justify buying it.
i dont think that was his question. i absolutely hate when people come in and give a response to a question that was never asked.

i mean thats like telling someone dont take your ac off for the weight loss because having you ac is better when you need it. its his car if he would like to buy an UD pullie then i think thats his choice, and just some food for thought. my first mod along with my CAI was a set of ASP UD pullies. and i could feel a gain just after installing the pullies, it seems to rev a little faster out of the hole and if someone is looking for an extra umph out of the whole for a cheap price i'd say the UD pullies are a pretty good friggin choice.
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Old Apr 23, 2008 | 10:50 PM
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Originally Posted by imnotplutonium
wouldn't you want an overdrive pulley, you need your alt to put out some juice.
OK. Here is the problem. I have an underdrive crank pulley installed on the car but i didn't get an after market pulley for the alternator therefore when my car is at idle it is not fully charging. So am what I'm needing an OVERDRIVE pulley?
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Old Apr 24, 2008 | 09:33 AM
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Yes, you need an overdrive pulley for your alternator. I bought mine from Internet Racer's Suppy, which has since gone out of business. You will also need a slightly shorter belt, since the overdrive pully is slightly smaller. Mine is 59" long, if that helps.
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Old Apr 24, 2008 | 01:21 PM
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Originally Posted by koolaid_kid
Yes, you need an overdrive pulley for your alternator. I bought mine from Internet Racer's Suppy, which has since gone out of business. You will also need a slightly shorter belt, since the overdrive pully is slightly smaller. Mine is 59" long, if that helps.
OK. Thanks a lot. Does anyone else know where I can get just the alternator pulley?

Last edited by 1slowZinthe513; Apr 24, 2008 at 02:10 PM.
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Old Apr 24, 2008 | 07:33 PM
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