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7:13
Mustang Steeda Underdrive Pulley Set Install 2001-2004
http://www.cjponyparts.com/steeda-underdrive-pulley-set-4-6-2v-2001-2004/p/UP12/ Today we...
published: 30 Jun 2014
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2:17
Benefits of Underdrive Pulleys
I talk about the good and bad of Under Drive Pulleys and what too look for in quality pull...
published: 29 Jun 2014
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7:05
Install + Dyno: BBK Underdrive Pulley on Ford Mustang GT (2005-09 Body)
Free Shipping on BBK Pullies: http://www.autoanything.com/pulleys/73A4290A0A0.aspx Underdr...
published: 20 May 2011
author: AutoAnything
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5:07
Mitsubishi Eclipse underdrive pulley review
If your try to decide on buying an underdrive pulley for your non turbo eclipse check out ...
published: 31 Aug 2012
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1:36
Stillen 370Z Underdrive Pulley Dyno Results
Dyno results of Stillen Underdrive Pulley for a 370Z that already has full intake and exha...
published: 20 May 2009
author: chanbenb
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3:47
BBK Power-Plus Underdrive Pulley System Installation
Install BBK Power-Plus Underdrive Pulley System: http://www.carid.com/2005-ford-mustang-en...
published: 10 Feb 2014
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1:38
Steeda Mustang Underdrive Pulleys
http://www.steeda.com/store/ford-mustang-pulleys-and-belt-drive.html Get back the horsepo...
published: 16 Jul 2012
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1:33
2010 Ford Mustang GT Steeda Underdrive Pulleys Before and After Dyno and Track Numbers!
Join our growing Mustang community today!! - http://MustangFanatic.com Like us on Facebook...
published: 18 Aug 2012
author: w8lifter1265
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4:23
Ford Mustang Performance Pulley Kit (2005-2009 GT) Overview & Install
http://www.bbkperformance.com/products/05-10-mustang-gt-46l-sfi-underdrive-pulley-kit.html...
published: 01 Feb 2013
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1:09
Mustang Steeda Underdrive Pulley Set 2001-2004
http://www.cjponyparts.com/steeda-underdrive-pulley-set-4-6-2v-2001-2004/p/UP12/ This is ...
published: 25 Jun 2014
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0:49
SVE Mustang Underdrive Pulley Kits (79-93)
See the SVE Underdrive Pulley Kits here; http://www.latemodelrestoration.com/products/79-9...
published: 04 Sep 2013
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1:41
Mustang SR Performance Underdrive Pulleys (05-10 GT) Review
http://www.americanmuscle.com/stack-racing-sfi-pulleys.html Mustang Fitment: 2005, 2006, 2...
published: 22 Apr 2013
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1:57
Mustang SR Performance Underdrive Pulleys (96-04 GT) Review
http://www.americanmuscle.com/stack-racing-pulleys-cobra.html Mustang Fitment: 1996, 1997,...
published: 22 Apr 2013
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4:05
25% Underdrive Balancer for LS1 0002
Watch as this premium 25% Underdrive kit is installed on this LS1 and dyno tested before a...
published: 24 Jun 2009
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12:57
Under Drive Pulley Install 93 S10 Blazer (1 of 4)
New under drive pulley kit gets installed on the 93 S10 Blazer Install video part 1 of 4...
published: 10 Oct 2013
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8:08
Ford Mustang Underdrive Pulleys By CVF Racing: Final Update
Here is my last closeup video of the great quality and craftsmanship of CVF Racing's under...
published: 21 Jan 2014
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0:56
Harland Sharp 1.7 Roller Rockers / Underdrive Pulleys Installed
5.2L 318 Bored .040 Over To 5.3L 326ci V8 - NP242 Transfer Case Swap - Kooks 1 5/8" Long T...
published: 11 Apr 2012
author: 98ZJ318
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0:36
Harland Sharp 1.7 Roller Rockers / March Underdrive Pulleys
HS 1.7 RRs and U/D Pulleys...
published: 29 Mar 2012
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8:24
Macht Schnell e9x M3 Performance Underdrive Pulleys Installation Overview
This is a video tutorial of installation of the Macht Schnell e9x M3 Performance Underdriv...
published: 21 Oct 2010
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2:45
StreetlegalTV.com-Powerbond Underdrive Pulley Systems
Powerbond talks about their latest in Underdrive Systems for the LS1, LS7, FBodies and Tru...
published: 18 Feb 2010
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3:42
Unorthodox Racing Underdrive Pulley Set for Honda Civic Unboxing
In this unboxing video, we show you what's inside the box of a brand new Unorthodox Racing...
published: 31 Oct 2014
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2:22
2006 4.6 Underdrive pulley failure
Aluminum Underdrive Pulley kit failed. Had to put stock steel pulleys back on....
published: 25 Jul 2010
author: 3more2go
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0:48
Underdrive pulleys installed 89 Mustang GT
This video was uploaded from an Android phone....
published: 06 Sep 2011
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1:24
4G63 Fluidampr vs underdrive pulley
There* damn homonyms!...
published: 04 Jun 2010
author: redi4axion
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An Underdrive pulley refers to an aftermarket crankshaft or accessory pulley (such as an alternator pulley) that is designed to drive a vehicle's accessories at a slower rate than stock. Underdrive in general means the input rate of rotation in a system is greater than the output rate of rotation. However, an underdrive pulley is considered to be an accessory pulley that is larger than the stock pulley, or a crankshaft pulley that is smaller than the stock crankshaft pulley, even though the accessory may not necessarily be underdriven with respect to the crankshaft pulley.

Underdrive pulleys usually are marketed as a performance enhancing item that increases the torque and horsepower output of an engine by reducing parasitic drag caused by belt-driven accessories, but more importantly by reducing the moment of inertia. Horsepower gains from underdrive pulleys alone are possible. Independent dyno tests have shown up to 15hp increase at the wheels after installing an underdrive pulley (see references).




This page contains text from Wikipedia, the Free Encyclopedia - http://en.wikipedia.org/wiki/Underdrive_pulleys

This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.