[jsolor7]

Anyone have any recommendations for underdrive pulleys? I've got an 03 GT, automatic. I used to have a 93 and put pulleys on - totally screwed my charging system. My headlights were dim at stops, rpms dropped, I thought it was going to die when I had turn signals and headlights on. As you can see, I'm a little leery of pulleys on my 03. Anyone else have an 03 automatic and put pulleys on? Any problems? What brand did you go with? Thanks!

[the98stang]

Steed pullies, nothing else

But you need to make sure you torque the crank bolt down properly. If not, say bye bye to your engine.

[So Money]

I have also heard steeda ud pulleys cuz they do not mount over the original pulleys but are direct replacement. They also have dyno tested 8 - 10 hp.

[hooligan98]

Can you reuse the stock belt with the steeda pullies or do u need a smaller one?

[BlueStreak03]

I think you can use the OE belt, you just have to make sure the idler tensioner is adjusted for the new pulley sizes. And yes, Steeda are about the best out there.

[El Diablo]

I had a set of March underdrive pulleys and no problems with those. Definitely felt a increase in hp and no charging problems.

[knightrider_916]

I have a 98 gt, I have steeda underdrive pulleys and I cannot notice any power differences. Go with those!

[So Money]

I have heard good things on steeda and moto blue pulleys. Both of these sets i believe are direct replacement, march ud pulleys are bolt on, but i have heard good things too - I have heard bad things about bbk ud pulleys due to the fact they are a pain in the ass to get on.