Underdrive Pulleys.
 

All I see around is Steeda and BBK.

I was wondering if anyone has any experience with March Underdrive pulleys?

I can buy them locally.

March is a Excellent choice!
Very clean looking, and lighter then others!

Never heard anything bad about them!

Being that your GT is a 4.6L,ONLY USE STEEDA's underdrive pulleys,they are not piggy backs like all the other brands for the 4.6L.:tup

I have Steeda on my car.

I used March piggybacks on my 4.6 for a long time and had no problems with them. I liked the piggybacks because they retained the factory damper which can be very important for the health and life of the oil pump gears.

Steeda's are built to SFI,and to Fords quality standards!(if that is a good thing....:bleh::biggrin:)
That is why Steeda's are always highly recommended.The piggy back too can cause oil pump gear failure if you look at it that way,seeing that it puts the dampner further away/out to where it was balanced,and not knowing how well balanced the piggy back style pulley is since they are just machined off a machine.It's all a matter of opinion,and preference really.

Thats news too me :)
Not really in the 4.6 game slowly learning good tip :tup

I think the March pulleys go for 99.99 canadian vs. Steedas 199.95 american price + shipping.

The price difference is due to the design,so basically the dampner pulley,the other two pulleys are basically the same.The piggy back style is a thin plate style pulley that the stock dampner bolts too,the Steeda dampner pulley is a real dampner pulley that replaces the stock dampner pulley.
Like what was told to me,you pay for what you get.:wink:
Here is some info off Steeda's site about there pulleys!
Their dampner pulley is basically like the stock dampner pulley,but yet better.
It's your engine...so it's up to you.Just trying to help! :wink:

Yeah,the 5.0L underdrive pulleys are basically the same in design from all companies,but their materials differ from one another,with the 4.6L,it doesn't work that way.