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Auto guys w/ underdrive pulleys?

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Old Feb 2, 2009 | 07:46 AM
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Default Auto guys w/ underdrive pulleys?
Any charging problems? Just curious im looking into getting a set.
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Old Feb 2, 2009 | 07:57 AM
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Originally Posted by MonmouthCtyLS7
Any charging problems? Just curious im looking into getting a set.

Some people do some people dont. I went with a overdrive alt pully just to be on the safe side (only $25).

http://www.texas-speed.com/shop/item...id=37&catid=16
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Old Feb 2, 2009 | 08:12 AM
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Originally Posted by 99_Z28
Some people do some people dont. I went with a overdrive alt pully just to be on the safe side (only $25).

http://www.texas-speed.com/shop/item...id=37&catid=16
Im confused, you did that w/ the underdrive ...or that alone, any performance gains w/ just the overdrive.
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Old Feb 2, 2009 | 08:22 AM
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he did both, and to keep his charging system up to snuff, he put the overdrive alt pulley on. good thinking. although you prob wont see many problems with a stock stereo and not alot of extra electronics. you may expect a shortened alt life prob, but that is really worse case scenario.
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Old Feb 2, 2009 | 08:44 AM
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Originally Posted by gectek
he did both, and to keep his charging system up to snuff, he put the overdrive alt pulley on. good thinking. although you prob wont see many problems with a stock stereo and not alot of extra electronics. you may expect a shortened alt life prob, but that is really worse case scenario.
Thats what i thought, thanks for the explanation.
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Old Feb 2, 2009 | 09:56 AM
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Yes I run a ASP 25% underdrive crank pulley and a 10% overdrive alt. If you run alot of accesories at the same time like lights, radio, heater a/c fan, wipers, windows etc. it would be a good idea to put on a overdrive alt. pulley so it doesnt put alot of strain on the alt. and battery.
Last edited by 99_Z28; Feb 2, 2009 at 10:02 AM.
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Old Feb 2, 2009 | 10:10 AM
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esp on that much of an underdriven setup. i have not seen alot of probs with 10% underdriven stuff tho
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Old Feb 2, 2009 | 10:42 AM
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I have the 25% UD crank pulley and the 10% od pulley for the alt. Never had a problem with charging in the couple months I drove her till the tranny shot craps.
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Old Feb 2, 2009 | 11:32 AM
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Car has no AC...
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Old Feb 2, 2009 | 12:20 PM
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On a side note, dont expect much if anything from them powerwise... Save your pennys for a stall....best mod i've done.
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Old Feb 2, 2009 | 12:53 PM
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Originally Posted by 99_Z28
On a side note, dont expect much if anything from them powerwise... Save your pennys for a stall....best mod i've done.
Yea ive had stalls in my LT1's know all about em...were talking a big price difference lol
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Old Feb 2, 2009 | 01:02 PM
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had the 25% ASP UD pulley and stock alt pulley never had a problem, knock on wood.
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Old Feb 2, 2009 | 01:06 PM
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anyone know how i can find the ebay underdrive? cant find it on their website
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Old Feb 2, 2009 | 01:13 PM
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i have an slp underdrive do i need a new belt if i get an alt overdrive
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Old Feb 2, 2009 | 01:37 PM
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^^^^ yes
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Old Feb 2, 2009 | 01:58 PM
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I have the SLP one and have no issues
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Old Feb 2, 2009 | 02:50 PM
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I'll use Fluid dampr on my engine. No problems there. This is the cheapest place ever on this produckt...
http://paceperformance.com/index.asp...D&ProdID=81694
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Old Feb 2, 2009 | 04:58 PM
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I have an under drive pulley (A4) and have charging issues. I haven't had the time to find out what is causing it yet though.
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Old Feb 2, 2009 | 06:24 PM
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Originally Posted by Detoxx03
I have the SLP one and have no issues
me too....
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Old Feb 2, 2009 | 08:10 PM
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Originally Posted by MonmouthCtyLS7
Yea ive had stalls in my LT1's know all about em...were talking a big price difference lol



Your going to pay close to $300 for a pulley kit unless you find one used or run a off brand. I picked up my stall for $300 used.
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