Underdrive pulley

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Jul 14, 2010 | 10:56 PM

Gutz

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Staging Lane

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From: Regina,Sk,Canada

Underdrive pulley

Is there really any advantage or disadvantage to an under dreive pulley?

Jul 14, 2010 | 11:05 PM

SSTYCOON

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From: East

I say 8-10 RWHP of freed up HP is an advantage. Disadvantge ,nothing in my opinion, my alternator charges fine. you should get one if you havent already

Jul 15, 2010 | 07:48 AM

ta-stanger

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From: Lake Of the Ozarks, MO.

At what HP do you need to look at changing your stocker out? And what are ur options?

Jul 15, 2010 | 10:02 AM

Jon@Texas-Speed

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From: Lubbock, TX

You can change it at any point. It works on anything from a stock motor to a stroker. Typically worth 8 RWHP or so and shouldn't have any negative effect on your car.

Jon

Jul 16, 2010 | 06:50 AM

MonmouthCtyLS7

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From: Rotonda West Florida

Definately noticed something w/ mine..care pulled harder all through the rpm range.

Jul 16, 2010 | 09:11 AM

thunderstruck507

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From: Northwest AR

if you plan a cam swap do it then, but it can be done anytime...just has to come off during a cam swap anyway

I noticed my car revs notably quicker from idle to the stall flash point, past that its less notable...

I picked up almost 2 tenths da corrected between the pulley and a tune (my tune wasn't very far off, just a hair rich)

Jul 16, 2010 | 10:20 AM

mikedamageinc

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From: go get your shine box tommy

I felt it rev quicker and with less effort, not a real "powerful" feeling tho. No downsides, a/c still blows cold, voltmeter is a tad lower but not too low. Only problem is having to take out the fans and being careful not to bang up the radiator with the puller.

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Jul 16, 2010 | 03:46 PM

Nemesis350

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From: Central TX

Not to mention my city mpg went up 2mpg... LOL that alone made it worth it. Nothing like rubbing it everyones face that our cars can push 400hp to the wheels and still get 30 mpg.