ASP 23% Crank Underdrive Pulley

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Old 08-28-2009, 07:14 PM
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ASP 23% Crank Underdrive Pulley

This is a used ASP - Auto Specialties 23% underdrive pulley. You remove your stock crank damper pulley and put this one in it's place. This will give you a 23% underdrive on your accessories. Bought it from Summit 4 years ago and it worked great. Never had charging issues with a big cam and a large stereo system. This is the only pulley I'd use on a LT1. Part number 945103.

New $178.
Used $110 shipped.

Link to details: http://www.summitracing.com/parts/ASP-945103/

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Old 08-29-2009, 09:49 PM
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_ _ _ _ stop

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Old 09-06-2009, 09:04 PM
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Bump.

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Old 09-12-2009, 12:38 AM
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Old 09-12-2009, 12:19 PM
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stupid question but i didnt ever really look into underdrive pulley, does this give you a good increase in power? obviously not looking for sotp power but alittle? and it will fit a 96 lt1 rite? thanks
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Old 09-12-2009, 06:22 PM
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The biggest thing I noticed was the car revving quicker. Although there used to be a dyno thread rolling around in the LT1 engine tech area. If I remember correctly crappy March pullies netted 6hp/8tq average. I'd expect that or at little more from good ASP ones.

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Old 09-12-2009, 07:10 PM
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Is the pulley still available ?
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Old 09-13-2009, 01:52 PM
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Someone is supposedly sending payment, if it falls through your guys are on deck.

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Old 09-14-2009, 02:38 AM
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When installing the pulley do u need a shorter surpentine belt or can you use the same one that was on it before ?
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Old 09-14-2009, 10:42 AM
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Shorter, you can get the part number from ASP's website. Although if you are running A/C delete with this pulley I'll include the belt for free.

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Old 09-17-2009, 10:55 AM
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Sold.

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