underdrive pulleys

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Mar 18, 2006 | 11:44 PM

corndog

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From: Minnesota

underdrive pulleys

Is it worth putting underdrive pulleys on a 01' WS6 and if so what kind of hp gains can I expect?

Mar 18, 2006 | 11:47 PM

Blacker

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From: Austin, Texas

Yes it is worth it. I gained 9rwhp and 0.15 secs at the track.

Mar 19, 2006 | 12:37 AM

rjkZ28

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i think its worth it. i havent been to the track yet, but my car feels a little quicker and smoother.

Mar 19, 2006 | 12:52 AM

GR8GAME

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Who makes the "best" one, and where is the cheapest place to buy them?

Mar 19, 2006 | 12:55 AM

prostock_bigblock

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March would be my choice.

Mar 19, 2006 | 02:55 AM

wamp42

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Will it work for an A4. Ive heard there can be power problems with the accessories with an underdrive pulley.

Mar 19, 2006 | 03:38 AM

prostock_bigblock

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Quote:

Originally Posted by wamp42

Will it work for an A4. Ive heard there can be power problems with the accessories with an underdrive pulley.

"Overdrive" pulley will solve the problem for A4`s. th OD pulley job is to bring back the alternator speed to its previous stock levels and this will solve the problems in Autos.

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Mar 19, 2006 | 04:00 AM

6-SPD4ME

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From: Ontario, Canada

I have SLP's pulley and it is a very nice piece. It weighs a lot less than the stock pulley which means less strain on your engine during high revs. I noticed a difference.

Mar 19, 2006 | 07:56 AM

#10

Blacker

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From: Austin, Texas

Quote:

Originally Posted by wamp42

Will it work for an A4. Ive heard there can be power problems with the accessories with an underdrive pulley.

I just have the underdrive pulley for the crank for my A4. I have not had any charging problems in the 5 years that I have had it. Right now, I have a ~800 watt stereo system and still have the stock alt pulley. You will be fine.

Mar 19, 2006 | 10:40 AM

#11

TXZ28LS1

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yeah, how are those slp pulley. i hear they are supposed to be really good. i know some of us are skeptical of slp stuff and all. but i hear their pulley was made pretty good.

Mar 19, 2006 | 11:29 AM

#12

J E T

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From: Canal Winchester, OH

Quote:

Originally Posted by corndog

Is it worth putting underdrive pulleys on a 01' WS6 and if so what kind of hp gains can I expect?

Yes, simply put...you will see a 12-15 HP gain and a 2-3 MPG gain. It's basically a smaller pulley that reduces the amount of power required to turn the rest of the accessories, much like shifting to a lower gear.

Mar 20, 2006 | 04:49 PM

#13

corndog

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From: Minnesota

underdrive pulley

Thank you to everyone for your insite. Looks like I'm buying a pulley.

Mar 20, 2006 | 04:57 PM

#14

98camaroLS1M6

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Quote:

Originally Posted by prostock_bigblock

March would be my choice.

What material is the march made out of and what would make it better than an ASP pulley. Would the gains be more or less than an ASP?

Mar 20, 2006 | 05:21 PM

#15

6-SPD4ME

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From: Ontario, Canada

I've never had a problem with SLP products and believe me, I have purchased a lot of them. The SLP pulley is very nice and a steal at $230. You do have to purchase two seperate belts from Gates. No big deal though! It took me about two hours to instal the pulley in my driveway along with SLP's high capacity radiator. Two nice mods to do at the same time!

Mar 20, 2006 | 05:23 PM

#16

cenTX-LS1

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From: Austin, TX

All gains about the same. My vote is for the SLP w/ the higher walls to help prevent the belt toss.

Mar 20, 2006 | 05:35 PM

#17

shanev8

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my vote is also for SLP because it comes in a nice aluminum so it is nice looking.. and the walls.... also no trouble what so ever for the install and it has nice degree prints on it!1