Trans-Dapt Performance Products Chrome Crankshaft pulleys are solid steel construction, and have a durable Chrome finish. One, two and three groove pulleys are available for both long and short water pump applications. The bolt circle diameter on short water pump pulley is 1.75", and 2.30" on long water pump pulleys. Chevrolet has made a variety of pulley diameters. Trans Dapt has chosen to use the most popular diameter for their pulleys. In some cases, the stock accessories may not run at exactly the same speed as originally designed. Although Corvettes have a short water pump through 1982, our short water pump pulleys will fit 55-74 only.NOTE: Due to the various casting configurations on aftermarket water pumps (especially aluminum pumps), exact fit can not be guaranteed on all applications.
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.