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Underdrive Pulley? which one?

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Old Oct 26, 2004 | 11:31 PM
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Default Underdrive Pulley? which one?

well...im looking at 2 and only 2...SLP or ASP...which one has better quality fabrication and build...they both claim 10 rwhp...and such...they do the same...its just how htey look....and function...

will these fit the 455 stroker i have planned in the future or will they needabe replaced by a specifc pulley for it?
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Old Oct 27, 2004 | 12:54 AM
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asp, crank snouts are the same regardless of stroke
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Old Oct 27, 2004 | 01:03 AM
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Everyone uses the ASP, not sure why. Any SFI approved pulley should be sufficient, and the pulley will work fine with a different shortblock. Although I don't see why it would matter.
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Old Oct 27, 2004 | 01:21 AM
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asp here on both cars.no problem taking out and putting it back in.
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Old Oct 27, 2004 | 01:32 AM
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I have ASP, no problems here.
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Old Oct 27, 2004 | 04:11 AM
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Go with the ASP.
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Old Oct 27, 2004 | 10:57 AM
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asp
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Old Oct 27, 2004 | 03:01 PM
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SLP's looks like it holds the belt in a bit of a slot...check it out guys?...is that actaully any good?...or it really wont serve any purpose what-so-ever?

thanks all...Keep me posted...and keep 'em (opinions) comin

Adam
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Old Oct 28, 2004 | 10:33 PM
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http://www.slponline.com/view_produc...1&BIG=100221-1

then theres this

http://www.ls1speed.com/catalogimage...S1_pullies.gif

the SLP looks more effective to me....and it looks like it has more improved design

however it says throwing belt is common but since i dont kno about pullies i woudlnt kno if thats true


is the SLP design actually a really good one....any1 kno Pros/Cons?
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Old Oct 28, 2004 | 10:42 PM
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With these being elastomer dampers. Is there any harm putting them on aftermarket rotating assemblies? Wouldnt a fluid type damper be better for different harmonics? Maybe im looking at it wrong, but wouldnt there be different harmonics from a stock rotating assembly to a forged set up?
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Old Oct 29, 2004 | 12:04 AM
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For SLP u'll be payin for the name....go with asp
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Old Oct 29, 2004 | 05:19 AM
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Pulley is not for power or looks, its main purpose (often overlooked) is to absorb bad harmonics, so MARCH will take my vote (fluid dampner).
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Old Oct 29, 2004 | 06:29 AM
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any1 TTT?
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Old Oct 29, 2004 | 05:21 PM
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Originally Posted by PREDATOR-Z
Pulley is not for power or looks
Well for looks no, but most people (with an already smooth running motor that is) DO in fact put a n underdrive pulley on to go quicker/faster, no?
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Old Oct 29, 2004 | 05:25 PM
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Yeah, thats why I got it. It might take .1 .2 tenths off. It will also smooth out the harmonics as well.
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Old Oct 29, 2004 | 05:30 PM
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I ordered the march pulley. A fluid damper for less than the ASP pulley, can't beat that (sdpc had them on sale). I don't know if i'd say it's not for looks, the stock pulley looks so crappy. If nothing else, i think it's easier to use the a harmonic balancer puller than a 3 arm puller, so that's a plus. Hey Ali G, why'd you take your mod list down?
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Old Oct 29, 2004 | 07:26 PM
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is there tuning needed after the install of either pulley?...or no

doesn't seem like it but thats what i said about LT's lol
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Old Oct 29, 2004 | 07:40 PM
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I have the ASP pulley, I've never had a problem with belts coming off or anything like that. I took a tenth off my 1/8 mi. time.
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Old Oct 30, 2004 | 01:08 AM
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Originally Posted by 02WS6Bird
is there tuning needed after the install of either pulley?...or no
doesn't seem like it but thats what i said about LT's lol
No, no tuning required but if I were going to be getting tuned soon anyway I would be sure to put it on before just in case.
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Old Oct 30, 2004 | 01:20 AM
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What I meant was that we sould base our pulley choice on:
1- Harmonic absorbtion (the most important function) remember KR problems with ASP old design???
2- power
3- looks
4-weight (negligent as it is centrifugal weight)
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