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BBK Underdrive Pulleys; Aluminum (79-93 5.0L)

Item 56027
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Gain Up to 15HP.
      • Three Piece Kit.
      • Brilliantly Polished Finish.
      • Fits 79-93 LX, GT, and Cobra 5.0L.


      Gain 15HP. Improve your Foxbody's throttle response and give it more power with a set of BBK underdrive pulleys. By reducing the power drain your accessories are putting on your engine, you'll free up as much as 15HP - all without affecting its charging or cooling characteristics.

      Premium Quality. Made of aircraft quality aluminum alloy, these BBK aluminum pulleys won't weigh you down.

      Hand Polished. The brilliant polished finish of these underdrive pulleys will give your engine bay a high performance look.

      Easy Installation. Installation normally takes about 30 minutes and full instructions are included. Reuses factory belt.

      Application. These underdrive pulleys are for the 1979-1993 LX, GT, and Cobra with the 5.0 liter V8 engine.

      Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 Details

      BBK 1553

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (30)

      Write a Review

      Ratings Summary

      4.7 out of 5 overall rating from 30 customers

      Installation Time: Afternoon

      Installation Cost: 0-$100

      • April 01, 2019

        3 1988 GT - Soulkiller Installation Time: Less than 1 Hour

        It’s awesome

        It’s awesome just a long time to get here. The pullys are very light and look really good and everything fit perfect

        Helpful (3)
      • February 14, 2019

        5 1989 GT - JohnL Installation Time: Afternoon

        Fits on great

        Nice product everything fit well, definitely needed to upgrade alternator and radiator and electric fan to use underdrive pulleys and have no problems.

        Helpful (5)
      • November 05, 2018

        5 1992 LX - PatrickW Installation Time: Less than 1 Hour


        I can tell a big diff I would tell all my friends to go out and buy the kit.

        Helpful (8)
      • August 07, 2018

        4 1999 GT - GaryS Installation Time: Afternoon

        Saving My Thunderbird

        Underdrive pulleys are very nice. Only 1 does not fit which is the crankshaft pulley. Was kinda disappointed but what can you do. It was very hard to find pulleys for that car for some reason so im keeping the pulleys that do fit.

        Helpful (9)
      • April 19, 2018

        5 1987 GT - BobbyD Installation Time: Less than 1 Hour

        BBK PULLEYS!!!

        I really like the fast and friendly shipping and the product is a Great addition to my FoxBody!!!

        Helpful (8)
      • April 17, 2018

        5 1991 LX - Ram Installation Time: Less than 1 Hour

        Great Fit

        This product went on with no problems. Took about half a hour to install. I give this a 5 star

        Helpful (9)
      • August 17, 2017

        5 1993 GT - ThomasB

        BBK Aluminum Pulleys

        Easy to install, look good still need to add Billet Alluminum smog pump eliminator to complete the job to make sure I get the Maximum horse power out of these nice looking pulleys. My 93 GT dose run a little stronger and is quicker in response to the gas peddle since I installed a new water pump, aluminum radiator, 9mm spark plug wires, auto lite plugs, Accel kap and rotor and these BBK Under Drive Pulleys which to me about 9 hours to install. These very minor upgrades have made a noticeable difference in the overall performance of my 5.0 and I kinda get a little ax-sited thinking about how much nicer it is going to sound and how much stronger it will run when I finish my mild transformation when I add a mac exsaust, a bama chip, a billet smog pump eliminator, a cold air cleaner and some sub frame connectors which should add up to 50 horse power to the original 210 horse 5.0 GT power plant. I found this GT all original unmolested rust free car in November 2015 and just started to drive it this spring and I like a lot and enen though the red paint has faded and the clear is peeling not a mouth goes by with out someone telling me that they like my car and want to buy it, and I tell them it's not for sale.

        Helpful (14)
      • August 07, 2017

        5 1986 Other - Markdk1108

        Shinny pulleys

        They are well built, much lighter then stock and clean up the engine bay a little.

        Helpful (10)
      • July 12, 2017

        4 1987 GT - 87Fox Installation Time: Shop Install Installation Cost: 0-$100


        Good preformance increase on a stock motor. Looks good under the hood. Difficult to get the stock pulleys off, ended up taking them to a local shop.

        Helpful (10)
      • January 26, 2017

        4 1990 GT - Titon

        Great product And look

        Looks great under the hood and was able to feel the difference right away!

        Helpful (12)

      Questions & Answers (5 answers)

      5 Top Rated Questions

      I have an automatic ‘90 GT, is there anything else that I need to upgrade or change when installing underdrive pulleys?

      • Nothing else will be needed when installing this kit.

      Helpful (0)

      can you use these pullies if you already installed an a/c delete.

      • Yes, you are able to use these pulleys even if you have deleted your A/C.

      Helpful (0)

      Will they work on a 351w

      • These underdrive pulleys will be able to work with the 351W.

      Helpful (0)

      Will stock belt fit with these pulleys and sr billet smog pump eliminator?

      • These underdrive pulleys will reuse your factory belt. They will also work with the smog pump eliminator.

      Helpful (0)

      Will the stock belt fit?

      • These underdrive pulleys will reuse the factory belt.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      Hardware included:
      • (1) water pump pulley
      • (1) alternator pulley
      • (1) crank pulley
      • (4) water pump bolts

      Tech Specs

      UnderDrive Pulley Specifications
      Year/Model: 79-93 5.0L V8 Manufacture: BBK
      Material: Aluminum Finish: Polished
      Crank Pulley: Piggyback SFI Certifited: No

      Will It Fit My Mustang

      • GT - 87, 88, 89, 90, 91, 92, 93
      • LX - 87, 88, 89, 90, 91, 92, 93
      • Other - 79, 80, 81, 82, 83, 84, 85, 86

      Fits 5.0L V8's Only

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