Lightning 4PSI Crank Pulley
One of the quickest and easiest ways you can increase the boost in your supercharged 2001-2004 5.4L SVT Lightning is to change the blower pulley on the crankshaft. This new 8.40" pulley has a larger diameter and bolts directly to the factory balancer which provides more revolutions to give you up to 4 extra pounds of boost!
This CNC machined aluminum pulley features a black anodized finish and includes attaching bolts that are the same thread pitch as the factory bolts, making for a quick installation.
-We recommend that you have a custom tune made with the installation of this pulley.
-Requires the use of a longer belt.
ASP - Quality. Performance. Products.
ASP is one of the industry's leading producers of Mustang performance pulleys. Since 1988 ASP has been machining underdrive pulleys in house to give you the most performance for your Mustang. Each pulley goes through a CNC lathe for accurate measuring and cutting. The pulleys go through 2 cycles and a quality check to ensure each part is perfect before it leaves out of the door.