underdrive pulley

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Jan 15, 2006 | 07:15 PM

00transamnh

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From: Farmington NH

underdrive pulley

I need some advice on underdrive pulleys.... I know little about them or why they make a difference in hp (excuse my ignorance)...

Please help... id like to make this my next mod

Whats a good ud pulley to go with

Jan 15, 2006 | 07:17 PM

Lithium

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ASP Pulley.

Expect around a 10hp increase.

Jan 15, 2006 | 07:19 PM

travisnd

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From: Chesapeake, VA

are there any downsides to getting the asp pulley? will the car still idle the same and everything?

Jan 15, 2006 | 07:22 PM

tomz240

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Anyone know of a site with instructions on swapping out the stock pulley with a UD pulley?

Jan 15, 2006 | 07:35 PM

Lithium

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Quote:

Originally Posted by travisnd

are there any downsides to getting the asp pulley? will the car still idle the same and everything?

Yes you can have charging problems if you are running a system. But that can be solved with the overdrive pulley.

Jan 15, 2006 | 07:36 PM

Lithium

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Quote:

Originally Posted by tomz240

Anyone know of a site with instructions on swapping out the stock pulley with a UD pulley?

www.ls1howto.com

Theres another site that just has write up. I wil try to find it for you.

Jan 15, 2006 | 07:39 PM

tomz240

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I couldn't find it on LS1howto.com. Are you sure it is in there?

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Jan 15, 2006 | 07:47 PM

tomz240

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I think I found it. Is it in the cam and valve spring swap?

Jan 15, 2006 | 11:48 PM

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Brandon35thSS

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From: Gadsden alabama

i have the slp pulley and its easy as hell to install and no belt throwing issues and even a seat of the pants difference too! but it is expensive as hell just like most other slp products! lol!!

Jan 16, 2006 | 12:37 AM

#11

camarodave98

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From: HOUSTON TEXAS

i got the slp, works great and only paid 150

Jan 16, 2006 | 02:30 AM

#12

sidewayz28

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From: seattle

i bought the march fluid dampened one ill let you guys know how it is once i get it installed..im sure i wont be able to tell you much since im installing all my exhaust + the pulley at the same time and i bet there will be a huge difference!

Jan 16, 2006 | 07:31 AM

#13

KILLERARMY

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From: Raleigh,NC

Im getting my SLP pulley and loudmouth installed today.

Jan 16, 2006 | 04:07 PM

#14

00transamnh

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From: Farmington NH

Will i have to worry about loosing my AC's power?

Jan 16, 2006 | 04:26 PM

#15

Red99TA

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From: Topeka, KS

I'm runnin a pulley on mine w/o any aftermarket stereo equip (all stock) and I can notice the headlights dim a little at low rpms (near idle) and also they will slightly flicker at idle too...kind of annoying but I don't care that much. Could fix it with a different alternator pulley to make it spin faster.

Jan 16, 2006 | 04:37 PM

#16

98TADRIVER

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From: South Jerzy

any gains in the 1/4 mile with just the UD crank pulley? like a tenth?

Jan 16, 2006 | 04:48 PM

#17

ClaySS01

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From: Chesapeake, VA

try this http://www.ls1camaro.net/sections.ph...ticle&artid=24

Jan 16, 2006 | 04:48 PM

#18

GTObsessor

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From: CA

Quote:

Originally Posted by 98TADRIVER

any gains in the 1/4 mile with just the UD crank pulley? like a tenth?

Yah about that... a heavily modded GTO (LS1) got 2 tenths from his. My passengers say the AC blows harder when my foot's on the gas now that I have the pulley... lol