5.0 85 GT

i think and KNOW it is a huge waste of money..i thought it would of been great to add to my old 94...sure it revved faster...but the alt crapped out, needed a new battery, wouldnt start half the time due to charging issues, swapped back and it felt like a million dollars...keep the stock ones on..invest in heads or intake etc...save the headache!!!

wowvfast

the pulley didn't kill the alt.... I run a f-150 100 amp alt with puilleys and not 1 issues
again buy the crank pulley....

luckythirteen13

not only will i keep telling myself, ill keep telling anyone intelligent enough to listen

i will admit this, i do run a set of UD pulleys on my f-150 and i was quite shocked at the difference they made on my truck. on a 5.0, they are worthless. i had a set of march UD's for a while, had charging issues (back when i had the stock alt) and i noticed no real gains, i ended up selling them when i got the vortech

Slickshiftin94

I have them in my car, no probs. I say that they are a good bang for the buck.

uenvyboykin

as far as cheep bolt ons go besides gears it was just about the most bang for the buck. i got mine used for 50 bucks...

wouldnt recomend the alt pulley

Jfsram

Another advantage to underdrives is they slow down the accessories. This keeps them from spinning at warp 9 after your typical h/c/i swap which is followed by burying the factory tachometer.

Timspony

Keep your money in your pocket! ...waste of $$$