Ford Mustang Forum - View Single Post - Need Suggestions for First Mods (CAI, filter, sparkplugs, ignition wires)
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post #8 of (permalink) Old 10-05-2005
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Joined: Aug 2002
Location: Topeka
Posts: 11,432
Originally Posted by SwapMeet
Thanks for the info, where's a good place to get the underdrive pulleys and how many hours do you think it'll take to install? What exactly does the underdrive pulley do?
Depends on how much stereo-AV equipment you have or are planning to get. The 3.8L is used in a ton of applications, one of which requires substantial power to run the accessories -Specifically, the minivan, which requires a lot of the compressor and alternator to cool the vehicle, and to run the television screens, dvd, vcr, laptops, etc. So the accessories run like mad, taking a lot of power from the engine.

The Mustang is a lot smaller vehicle, and doesn't have all the cooling & electrical requirements. You can slow down the accessories by 42% and free up 12-15 hp that's used to power a minivan's requirements. A side benefit is that you also extend the life of the accessories because they're not spinning like crazy.

You do this by installing a smaller crank pulley. It takes 30-45 minutes to install.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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