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underdrive pulleys

  1. 5.0L Tech
    Hi all, This is likely a shot in the dark, but does ANYONE on here have the STOCK water pump, crankshaft AND alternator pulleys? My aftermarket ones are causing major drivability issues, to the point where the car is off the road and I will likely sell her if I can't get the factory pulleys...
  2. 4.6L Talk
    I've got a 1998 Mustang GT with a Cold Air Intake, Dual Catback Exhaust, 3.73 gears, and a short shifter. The car is also lowered 1.5 inches and I believe it has an aftermarket throttle body but I'm not entirely sure on that one. Currently has about 162,000 on it. What kind of mods should I be...
  3. 4.6L Tech
    when i bought my 02 gt it had a underdrive crank pulley installed on the car, is it ok to run the crank pulley on the car or is it damaging the harmonics of the motor? i have the usual bolt ons for the car and a sct tune
  4. Introductions
    I was wondering if anyone has had any experience with the SR Performance Underdrive Pulleys and if they are as cheap as the price? Or a worth while mod.
  5. 5.0L Tech
    I have a concern regarding the new water pump underdrive pulley I just installed... Given that March does not make this pulley with edging and grooves to keep the belt from shifting laterally, I am concerned that the belt will come off of this pulley. Every other pulley has grooves and edging...
  6. 4.6L Tech
    Should I replace the crankbolt when installing the Steeda pulleys?
  7. Introductions
    Just looking for advice on my 1987 Mustang Gt such as upgrades and tech support. Would like to start with advice on small boltons and so on. Dont want to get to crazy but any advice would be great. Already have 3:73 gears and a very nice shiftkit in the transmisson. And a bbk cold air kit on the...
  8. 5.0L Talk
    im confused on what to do here. I have the opportunity to straight up trade stock pulleys for some underdrives. can someone help me with the pros and cons of underdrives?
  9. 4.6L Talk
    I am considering underdrive pully's for my 2001 GT. I have heard that you can pick up a good bit of torque with them. Seems like a cheap easy mod. But is it worth slowing down your water pump and alternator?
  10. 2005-2010 Mustang GT Tech
    ***Disclaimer: I have contacted Saleen via email regarding the following questions. I am still waiting for a response*** I recently purchased this Saleen UDP kit from a member of another forum. The set was new, but with no instructions or original packaging. I don't have the tools or the...
  11. 4.6L Tech
    Hi Everyone 96 GT Automatic I got all my old pulleys off (used engine blip to break crank bolt) and now I am installing the new ones. I see tons of advice on how to get the crank bolt off, but I haven't seen any tips on how to torque the new one down. The pulleys are ASP and the crank bolt...
  12. 4.6L Tech
    I'm sure there are threads all over the place about underdrive pulleys but i could not find one specific to what i wanted to ask. So if you know of a thread that I could read that would be much appreciated. But I was wondering what brand(s) of underdrive pulleys would be good because I know some...
  13. 2005-2010 V6 Mustang Tech
    I've read alot of post about Underdrive pulleys when it comes to GTs but I haven't found much about them for the V6. I was suprised to find that AM doesn't even carry them. I was able to find some thought on a different site: 2005 2006 2007 2008 2009 Mustang Under Drive Pulley at...
  14. 4.6L Tech
    Hey guys i just put a set of march underdrive pullys on my 03 gt and eversince then when i shut my car off and try to re start it the Battery is dead. I dont idle alot so im wondering if anyone has a solution or something to help me out or is there some sort of alternator i can buy.. p.s the...
  15. 4.6L Talk
    i have a cold air intake and exhaust...what should my next mods be to gain some hp relatively cheap.... like underdrive pulleys, tuner, throttle body??? Thanks Ethan
  16. V6 Talk
    I have a 1995 3.8l V6 and i was thinking about getting the BBK aluminum underdrive pulley kit from it comes with the crankshaft pulley and the alternator pulley. does anybody know if the kit is actually worth the money and time.