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Old January 3rd, 2008, 03:02 PM   #1
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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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Old January 3rd, 2008, 03:03 PM   #2
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5-10 hp or so
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Old January 3rd, 2008, 03:06 PM   #3
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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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Old January 3rd, 2008, 03:42 PM   #4
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you need a new belt for the pulleys?
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Old January 3rd, 2008, 03:43 PM   #5
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Originally Posted by RhadCundell View Post
you need a new belt for the pulleys?
yes because the pullies are smaller
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Old January 3rd, 2008, 03:43 PM   #6
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yeah. Smaller pulleys means more slack which means you need a smaller belt
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Old January 3rd, 2008, 03:44 PM   #7
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that's what you have a tensioner pulley for
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Old January 3rd, 2008, 03:48 PM   #8
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^still too much slack though isn't it?
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Old January 3rd, 2008, 03:49 PM   #9
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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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Old January 3rd, 2008, 03:54 PM   #10
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its best you get a new belt anyway unless you want to risk slippage
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Old January 3rd, 2008, 04:00 PM   #11
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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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Old January 3rd, 2008, 04:01 PM   #12
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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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Old January 3rd, 2008, 04:04 PM   #13
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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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Old January 3rd, 2008, 04:07 PM   #14
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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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Old January 3rd, 2008, 04:10 PM   #15
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Originally Posted by RhadCundell View Post
aight
and oo it say s it takes power away..like electrical power..
anything that makes a difference?
if you have subs and amps then i wouldnt recommend them because if does take some electrical power away
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Old January 3rd, 2008, 04:15 PM   #16
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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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Old January 3rd, 2008, 04:17 PM   #17
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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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Old January 3rd, 2008, 04:19 PM   #18
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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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Old January 3rd, 2008, 04:19 PM   #19
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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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Old January 3rd, 2008, 07:15 PM   #20
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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.
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