are they just as effective as say the troyer performance setup? and do we still need a shorter belt, gatorback.

 

These are the ones you want...and there is no need to get a different bet (although I would recommend the Gatorback ....if your gonna have the belt off might as well upgrade it)
Easy install with the right tools...rent a pulley puller from Autozone.....

http://www.steedatruck.com/products/...duct_info.html

 

I found these guys, and the price is below 200 bones

http://www.marchperf.com/pg32.html

 

where did you find the price i must be over looking^^^^^^

 

Maybe he emailed or called?

 

http://www.stage3motorsports.com/cat...drive_pulleys/

not the cheapest by all means but three different options for 4.6 mustang pulleys for 2005-2009 model year

there's one under 200 but thats before tax

 

Amazon. Look up March Performance 1170

Also: http://www.summitracing.com/parts/MCH-1170

 

March is 3 pulley set, but I get the sense that alot of forum members would advise against underdriving the alternator.

 

Good price too, even if it is a 3 pulley set! Any idea if we need a shorter belt?

 

That is the elusive question. No tech in any of their literature about belt size.

What I like about them is they are aluminum, but powder-coated black for durability. Light weight is good.

I've been looking at a 220 amp alternator with an overdrive pulley, and am wondering if the result would be a regular-driven Alt with the underdrive crank pulley...and naturally, what belt do I need for that combo

 

Also, I should add...Troyer's pulley's make mention of a modification to the water pump pulley, because it comes in contact with the timing cover. Because these pulleys are for an older 'stang, that may be an issue.

 

"...We have also redesigned the water pump pulley to accommodate the changes Ford made to the front timing cover in the newer 4.6 & 5.4 engines so that the water pump pulley does not come into contact with the casting ribs or bosses on any of the front timing covers, as was the case with a few newer trucks. This change also requires the use of a 1 inch shorter serpentine belt size listed below for your convenience. That potential water pump pulley interference issue on the front timing cover that affected a few trucks no longer exists due to the new design of the water pump pulley, making installation easier & quicker!..."

as from troyer's website

 

The part# 1170 is for a cobra the part number we need is 1200 according to marchs website

 

Undrive pulley sets that include a driveshaft and water pump pulley should have one pulley for the alternator. That way the alternator spins at the same speed as it did before.

Otherwise, leaving the alternator pulley off will surely underdrive the alternator. Some kits make it hard for the tensior to function properly as the angle may change, and you may go through belts a lot faster.

 

all this trouble, it's easier to stick with the troyer kit