5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Under Drive Pullies?

Old 08-17-2007, 12:31 PM
  #11  
w8less
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Default RE: Under Drive Pullies?

i had charging problems with mne also......its pretty annoying having to keep the radio turned down somewhat and ur headlights dimming so bad u can't see 5ft in front of you while sitting at a stoplight
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Old 08-17-2007, 03:45 PM
  #12  
luckythirteen13
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Default RE: Under Drive Pullies?

UD pulleys are not worth it. $70 for 5hp[:'(]
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Old 08-17-2007, 03:50 PM
  #13  
ttocs
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Default RE: Under Drive Pullies?

bump your idle up just a little and you will be fine.

ORIGINAL: Jasperstang308

i had charging problems with mne also......its pretty annoying having to keep the radio turned down somewhat and ur headlights dimming so bad u can't see 5ft in front of you while sitting at a stoplight
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Old 08-17-2007, 04:13 PM
  #14  
CrazyCobraSpeed
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Default RE: Under Drive Pullies?

i will admit if i had to choice all over agian to either get them or not i probably wont.... there isnt enough good things about htem to out way the bad that u might expereince i got lucky with them the first time and i doubt ill buy them anymore.... oh yea and im selling a pair ne one want them??[8D]
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Old 08-17-2007, 06:08 PM
  #15  
gearbanger
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Default RE: Under Drive Pullies?

i got them... and i got no overheating or chraging problems... mine are aluminums and i felt a diffrence... but the truth try and find a set of used ones so you wont spend that much money.. i got mine for 50 bucks
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Old 08-17-2007, 06:35 PM
  #16  
TBird232ci
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Default RE: Under Drive Pullies?

I got mine new for 50 bucks.

If you have charging and cooling issues because of pulleys, you have other problems.

Anyways, you need toditch the stock 65amp alternator. Its junk. Swap in a 130amp.
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Old 08-17-2007, 06:42 PM
  #17  
dimebag
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Default RE: Under Drive Pullies?

big waste of money imo
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Old 08-17-2007, 07:08 PM
  #18  
CantStopTheFox...
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Default RE: Under Drive Pullies?

ORIGINAL: AdderMk2

even though the HP gained is hardly worth the price of those damn things.... especially when your alternator dies because the thing isnt spinning fast enough, and you burn out the voltage regulator
I installed mine...but I left my Alternator one stock.





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Old 08-17-2007, 10:49 PM
  #19  
wildsurfer92
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Default RE: Under Drive Pullies?

Yea i have had no problems with mine
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Old 08-18-2007, 12:54 AM
  #20  
5.0buildnherup
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Default RE: Under Drive Pullies?

I have heard many diffrent opinions about the underdrive pulleys. they do give a little bit of hp but not much at all better off saving your money. unless you have a show car and you just want em to look good but thats a diffrent story.
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