V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

underdrive pully

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Old May 15, 2007 | 11:43 AM
  #1  
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stangant
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Default underdrive pully

i heard that if i get a smaller pully and tighten the belt it should give me some extra horsepower? is this true and where can i find 1?
Old May 15, 2007 | 11:50 AM
  #2  
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Default RE: underdrive pully

asp.. yes 10 hp
Old May 15, 2007 | 09:42 PM
  #3  
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Default RE: underdrive pully

vmp tuning has every thing belts and pullys
Old May 15, 2007 | 09:44 PM
  #4  
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Default RE: underdrive pully

I got 7hp and like 10tq. As much as I viciously despise RPM outlet, they do have a decent package deal. You want a smaller belt, not to just tighten your exsisting one.
Old May 15, 2007 | 09:45 PM
  #5  
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Default RE: underdrive pully

Hey bro Im selling my belt and pulley for 180 shippd,its brand new, Let me know if u want it,it retails at like 250+
Old May 15, 2007 | 11:46 PM
  #6  
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Default RE: underdrive pully

dallasmustang sells the pulley only you have to get the 92" belt , Rpmoutlet has a desent package buti heard their c/servive sucks.
Old May 15, 2007 | 11:54 PM
  #7  
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Default RE: underdrive pully

vmp has 24% crank pully and over and under drive alt pullys and belts forthe combos of the two pullys
Old May 16, 2007 | 12:14 AM
  #8  
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Default RE: underdrive pully

rpm has the best pully for gains but u may never get it
still the 24% will give u most of the gains of the 42%
Old May 16, 2007 | 12:18 AM
  #9  
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Default RE: underdrive pully

why are RPM's pullys going to give u the most gains over vmp or any other they are all asp 24%

and you could just get a 42% with a alt over drive pully and you should be ok charging wise i think
Old May 16, 2007 | 12:28 AM
  #10  
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Default RE: underdrive pully

the RPM outlet has a good pulley, and a whole lot of other stuff too...u should check it out

http://www.rpmoutlet.com/05v6up.htm




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