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Discussing Underdrive Pulleys in the V6 Mustangs Forum. hey i think i have finally decided on an under drive pulley and lowering springs ... Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free! |
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#1 |
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Enthusiast
1998 mustang 3.8l v6
Join Date: Nov 2007
Location: portsmouth ohio
Posts: 634
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Underdrive Pulleys
hey i think i have finally decided on an under drive pulley and lowering springs from jegs. how much performance should i expect from this?
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![]() 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter, port and polished TB upper intake and lower intake, xcal 3 tune. |
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#2 |
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Doc
91 Sonic Blue Goodness
19.83 @ 12mph
Join Date: Nov 2006
Location: NJ
Posts: 27,311
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5-10 hp or so
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#3 |
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Hardcore Enthusiast
04 Mustang
Join Date: Mar 2007
Location: SoCal
Posts: 2,390
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lowering kit no hp or torque but it will help with looks and handeling. the ud pullies will free up some hp.
here are some probably cheaper then jegs.com ASP826300 25% Underdrive Pulley 1994-1998 3.8 V6 and the belt ASP 96 Inch 6-Rib Under Drive Pulley Belt 1994-1998 3.8L V6 Mustang
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#4 |
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Regular
Join Date: Sep 2007
Location: Wellington ohio
Posts: 423
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you need a new belt for the pulleys?
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#5 |
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Hardcore Enthusiast
04 Mustang
Join Date: Mar 2007
Location: SoCal
Posts: 2,390
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yes because the pullies are smaller
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#6 |
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Enthusiast
2004 Mustang V6
Join Date: Oct 2007
Location: Chicago,IL
Posts: 535
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yeah. Smaller pulleys means more slack which means you need a smaller belt
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#7 |
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Doc
91 Sonic Blue Goodness
19.83 @ 12mph
Join Date: Nov 2006
Location: NJ
Posts: 27,311
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that's what you have a tensioner pulley for
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#8 |
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Enthusiast
2004 Mustang V6
Join Date: Oct 2007
Location: Chicago,IL
Posts: 535
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^still too much slack though isn't it?
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#9 |
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Doc
91 Sonic Blue Goodness
19.83 @ 12mph
Join Date: Nov 2006
Location: NJ
Posts: 27,311
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it depends on what pulleys you buy ..
if you buy the 3 piece kit I would get a shorter belt. |
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#10 |
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Hardcore Enthusiast
2000 V6 Mustang
Join Date: Oct 2007
Location: PA
Posts: 2,041
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its best you get a new belt anyway unless you want to risk slippage
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#11 |
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Regular
Join Date: Sep 2007
Location: Wellington ohio
Posts: 423
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aight
and oo it say s it takes power away..like electrical power.. anything that makes a difference? |
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#12 |
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Hardcore Enthusiast
2000 V6 Mustang
Join Date: Oct 2007
Location: PA
Posts: 2,041
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do you have a high powered stereo system in your car? if no then youll be ok.......the alternator and accessory pullies are slowed down....so if you are runnin a big amp you will have to get a capacitor.
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#13 |
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Regular
Join Date: Sep 2007
Location: Wellington ohio
Posts: 423
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ahh i am..
but im selling it well my subs.. my lights dim now when it hits.. i after an after market stero and two added tweeters |
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#14 |
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Hardcore Enthusiast
2000 V6 Mustang
Join Date: Oct 2007
Location: PA
Posts: 2,041
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DO NOT get pulleys then! if your lights are dimmin now, the alternator is gonna be slowed much more with pulleys.
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#15 |
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Hardcore Enthusiast
04 Mustang
Join Date: Mar 2007
Location: SoCal
Posts: 2,390
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if you have subs and amps then i wouldnt recommend them because if does take some electrical power away
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#16 |
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Regular
Join Date: Sep 2007
Location: Wellington ohio
Posts: 423
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well i heard it ll give me better acceleration
so im willing to get rid of my stuff to get the pulleys |
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#17 | |
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MM Phantom
Join Date: Oct 2006
Location: looking for free hand jobs in poland springs nebraska... silly gooses
Posts: 11,235
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if you have subs and amps just get the damn three piece set... the 10% over drive on the alternator is plenty to power it all... my car is just fine and has full watts and amps and charge and everything with the three piece system
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#18 |
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Hardcore Enthusiast
2000 V6 Mustang
Join Date: Oct 2007
Location: PA
Posts: 2,041
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he said his lights are already dimming when the subs hit.....if his current alternator isnt making enough electrical power to prevent dimming, how can u still say go with the 10% reduction?
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#19 |
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Regular
Join Date: Sep 2007
Location: Wellington ohio
Posts: 423
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ahh
well i planned on using the money i get to from selling the subs into the pulleys =] damn i need a job |
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#20 |
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Enthusiast
1998 mustang 3.8l v6
Join Date: Nov 2007
Location: portsmouth ohio
Posts: 634
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well i would buy the one that is cheaper but i have a jegs gift card soooo i have to spend it there. i don't think i will need a capacitor. i have two tens and a 1000 watt amp. my lights don't dim at all when the subs hit. and can i get the belt from any local store or will i have to order it?
i would get gears but my dad is def against it. 1 he don't want to install them and don't want to pay to have them installed. 2 he don't want me to lose any gas millage. my car is awful on gas anyway.
__________________
![]() 1998 mustang v6,UD pulleys,msd 8.5 mm wires shorty headers no cats H pipe flowmaster knock offs cold air intake w/ k n filter, port and polished TB upper intake and lower intake, xcal 3 tune. |
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