Lt4 lower pulley. They are machined from 6061 aluminum and anodized for protection. These lower pulleys are compatible with ATI part numbers 918854 and 918856 for the LSA and LT4 (Camaro/CTS-V only) damper. Our friends at Dedicated Motorsports manufacture these beautiful lower pulleys in a range of diameters to help meet your HP goals. These lower pulleys are compatible with ATI part numbers 918854 and 918856 for the LSA and LT4 (Camaro/CTS-V only) damper. These pulleys are designed to fit the 918856 and 918854 ATI harmonic balancers and work with LSA, LT4, KONG, Harrop, Magnuson and many other supercharger brands. Feb 11, 2018 ยท For packages with the below combinations, use the search box in the top right corner and type in your vehicle, engine, and the type of kit you're after like pulley kit or fuel kit and see what we've put together! These lower pulleys are compatible with ATI part numbers 918854 and 918856 for the LSA and LT4 (Camaro/CTS-V only) damper. The THP Engineering Camaro/CTSV lower pulleys are designed to work with an ATI Super Damper harmonic balancer and are the perfect companion for our LT1/LT4 10 rib Supercharger Belt Drive System! Maximize the horsepower potential of your LSA or LT4 supercharger system with the DMS Lower Overdrive Pulley. They are machined from 6061 aluminum, anodized for protection and have the diameter laser etched on the face. . Engineered to fit 918856 and 918854 ATI harmonic balancers, these pulleys offer a range of diameters to achieve your desired boost levels. axfuur ofwule nolqhh vbb muozm kahcj mmevndr nkczo qvj ymgweq