I've been doing a little research on underdrive pulleys and their HP and MPG gains. Ive found several different places that sell them, to include eBay. If I were to install one on my 97 Mustang 3.8L, will I need to modify anything? It looks like the pulleys for the crank and alternator are smaller. Will I need to get a new serpentine belt?
I've been doing a little research on underdrive pulleys and their HP and MPG gains. Ive found several different places that sell them, to include eBay. If I were to install one on my 97 Mustang 3.8L, will I need to modify anything? It looks like the pulleys for the crank and alternator are smaller. Will I need to get a new serpentine belt?
yeah, you'd need the pulleys and a shorter belt.
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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
Are you always in bumper to bumper traffic? Were you looking at the 25 or 42%?Some, not all, have had some temperature problems with underdrivers. It will make you car run a little hotter because the waterpump is spinning slower. Just a thought seeing you're from S.A. Texas.
If you buy online, they will usually sell you with the proper sized belt.
That's a long time to be idling in 90+ degree temps. The percentages is the crank pulley reduction size. The smaller it is, the slower it will turn. You may want to check into the 25% then..... Have you done other mods yet? Dual exhaust and/or cold air induction?
Are you always in bumper to bumper traffic? Were you looking at the 25 or 42%?Some, not all, have had some temperature problems with underdrivers. It will make you car run a little hotter because the waterpump is spinning slower. Just a thought seeing you're from S.A. Texas.
If you buy online, they will usually sell you with the proper sized belt.
No, there's only the 25% for his year. It was made prior to all the new In Car Entertainment requirements.
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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
Yeah, but it's still nothing like going 160+mph on a bike.
A while ago, me and 4 friends hauled ass from SA to Austin. It's about 60 miles and we made it there in just over 20 minutes.
So where should I look for a 25% underdrive pulley.
The things I was looking at did not give a % difference.
Go Direct.
ASP makes them, as well as MAC. The ASP's have lower rotational mass(at least they used to).
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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
MotoBlue is a wholesaler of generic ASP products. I don't know if they offer the pulleys for the 94-98 cars.
I know the cheapest have historically come from these two companies.
__________________
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
Underdrive Pulley Questions 
