Easy bolt-on kit for immediate increases in horsepower-no modifications!
Saves 20-30% power
Computer machined aluminum alloy
By reducing the unnecessary speed of accessories, these underdrive pulleys free up an average of 10-15 horsepower on most V-8 models while retaining full cooling and charging characteristics. Built from aircraft quality aluminum. Installs in under 30 minutes.
Overall Rating:
3out of5
Rating breakdown2 reviews
5 Stars
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4 Stars
1
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1 Star
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1 of 2(50%)reviewers would recommend this product to a friend.
How often do you shop at JC Whitney.com? Multiple Times a Year
"nice set of pulleys, attractive and very usable."
Pros: fit like it was meant to.
Cons: close tollerance on crank pulley, had to purchase allen head bolts to install.
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How often do you shop at JC Whitney.com? Multiple Times a Year
"I put these on my 91 Ford F150 5.0 and noticed a sudden drop in MPG! I had increased my MPG by five by adding a CAI, throttlebody spacer, headers, high flow 3 inch catalitic converter, and Flowmaster exaust. These pullies killed that and some. I also have not noticed any power gains. They are coming off asap."
Cons: took all of my MPG away
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