93Mustang5.0

Well a buddy of mine down the street that I just met has a set of used underdrive pulleys for sale. He took them off because he installed a supercharger and cant use them anymore. Hes selling them for 30 bucks and he thinks that they are MAC. But they'd have to be a good brand because he has a pretty sweet car. haha


What kind of gains will I see with these? My engine is fairly stock with cold air, and a throttle body done to it. 117k is the mileage... Post any info for me, Thanks

fordguy17

do it. 30 dollars is a steal. while you're at it, delete the smog pump.

Tims 88GT

March power and amp pulleys are the only ones to get IMO

93Mustang5.0

will there be any hp or trq. gains? also i forget why but someone awhile back told me to stay away from pulleys...

mustang_cab

i say nay. i have then and i want them off. my a/c doesnt work verywell. and i need a stronger alt b/c it slows it down so much. personaly i didnt see any hp gain. i just sweat my ***** off now.i just say dont buy them unless you dont need a/c.

z24stang

i would do more researh about the pulleys,and the affects on the charging system and such

Stevens91gt

there is maybe a slight gain w/ them, but like mustang_cab said..it slows accesories down
which can make ur battery go down and die on the road..like mine did 2 months ago..
but that was the only time, i just bumped the idle up and havnt had a problem

FiveLiterRiceEater

get em.

what you'll want to do is get a different alternator. like a 75 amp alternator. get a smaller belt and dont route it around your smog pump. so then not only do you have smaller pulleys, but now you have less rotating mass with no smog pump.

ikeybmg

just dont use the alternator pulley. i have them on mine but it has the 130amp alt.

Stevens91gt

o i forgot to say get em