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under drive pulley

  1. Uncertain about underdrive pulley

    Introductions
    So for awhile now ive been trying to find a performance underdrive pulley for my 2004 3.9L, ive been able to find pulleys (just the pulley) for 94 to 2002 for the 3.8L, and they are pretty affordable, the issue is all ive been able to find for the 2004 v6 is the full assembley, as in the pulley...
  2. SCT Custom Tuning

    V6 Tech
    So I got an SCT tuner for my 1998 V6. So far it has a CAI and 245/45/R17 tires. I will be doing underdrive pulley's and changing to an 8.8 rear keeping the stock 3.27 gears I know after the rear end swap I'll need to program my computer so the speedometer will work right, however the...
  3. 2002 mustang v6 underdrive pully is it worth it?

    V6 Talk
    i heard it can slow a/c down and kill my battery but will it though? Also is the hp gain noticable?
  4. 4.6 underdrive pulley compatibility?

    4.6L Tech
    Will 01-04 4.6L underdrive pulleys fit on a 97 ford f-150? Please help I bought these from someone thinking they would fit my 98 gt and i dont want to chance it. So I am selling them to a friend if they will fit his truck. I no longer have the 98, I bought a 2010 GT.
  5. Underdrive Pulleys

    2005-2010 V6 Mustang Tech
    I am looking to get some underdrive pulleys for my 4.0. My question how is it possible that we underdrive the accessories and there are no downsides? Doesn't it have to make the A/C run a little weaker and generate less power with the alternator? If there really were no downsides wouldn't Ford...
  6. Underdrive Pulleys

    V6 Tech
    I was wondering if anybody knows if i can get udp's for a 1999 v6 and if they're worth the money. i have heard mixed opinions on these and i don't want to spend a couple hundred bucks just to not get a gain at all.
  7. underdrive pullies, to get or not?

    V6 Talk
    well its time for my next mod and underdrive pullie is looking like the cantidate. any of you have the? are they worth it? any negatives about them? thanks:kooky:
  8. steeda pulleys vs. march

    5.0L Talk
    i've decided to go w aluminum udps.....i like the steeda but am also considering march....any input as to which udp system is best??
  9. under drive pulleys....steel or aluminum???

    5.0L Talk
    i'm looking into under drive pulleys and have found that steeda seems to be favored over march or any others. but what are the pros and cons of steel vs aluminum?? how critical is it really?
  10. How good are underdrive pulleys?

    V6 Tech
    how good and also, how expensive for a v6 auto 99-03?
  11. Which Tuner would be best?

    V6 Tech
    I am currently in the process of deciding which tuner is the best to order. I will be ordering the package from rpm outlet which includes the underdrive pulley kit and the tuner kit. it will be installed on a 2000 3.8 with an intake and MAC catback and the underdrive pulley kit and short...
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