Underdrive pulley systems increase engine horsepower by reducing the amount of power required to drive external engine accessories. For example, the alternator, power steering, water pump and air compressor rob horsepower from the engine. By replacing factory-sized crank and accessory drive pulleys with a resized pulley, the accessories are slowed, resulting in more horsepower available to the drive wheels. Typically, a set of Auto Specialties street pulleys will increase horsepower by 12-15, and increase mileage by 2 to 3 MPG. All pulleys are manufactured from Billet Steel or Aluminum, exceeding factory quality.
Due to the difference in diameter from the stock Mustang pullies, the alternator and charging system may need to be upgraded if you have a large stereo system.
These ASP Mustang underdrive pullies work great on a stock or modified V8 GT or LX Mustang!
I bought these pulleys and all i can say is wow! My engine revs much faster now, it has a very snappy feel to it. I did have trouble finding a belt that would fit though. But all and all it was a great purchase.
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. Shop ASP Racing underdrive pulleys at LatemodelRestoration.com.
Testimonial: Late model helped build two of my mustangs
I have had a bunch of different mustangs in the past and always was hard to get parts till a friend told me about Late model restoration when I had my 1993 cobra and I found everything I needed to finish that car and am now working on my 1986 gt and am finding everything I need . I had a transmission mount delivered to me without the mounting bolts and they more than made up the difference for the missing bolts ! Out of all the parts I have ordered one mistake ever was very well taken care of . I definitely will plan on finishing my 86 gt with the help of Late model restoration ! Thanks !
Saved this 1987 Fox from going to the crusher August of 2014. It was just a shell when i got it but it was a solid foundation with no rust. Took me 10 months and $9,000 to get it where it is today. ...