Water Pump Speedway's adjustable water pump is tried, tested and true. It has great flow, superior quality and standard features that are typically only available on water pumps costing twice as much. State-of-the-art aluminum casting and a precision impeller provide equal flow to both cylinder banks. If you're using a cog belt on your race car, this is the pump you want since it's adjustable. The 1/2" mount holes in this pump are larger than normal, allowing it to be moved up or down slightly to help with belt tension. Adjustable mounting holes. High flow and pressure rates. Adjustable cam stop. Extra-thick fan hub. 3/4" inch heavy duty bearing. Pressed-fit and set-screw-retained fan hub. Large-diameter shaft and reinforced housing make it ideal for oval-track applications. Learn how to choose the correct water pump for your application by reading our tech article. SBC - Short vs Long Water Pump. Gilmer Gears and Accessories Gilmer or cog belts are the tried and true belts used to drive dry sump oil pumps and other engine accessories. Mandrel drive belt guide washer Made from aluminum with 3" O.D. and 1" bore. Gilmer Replacement belt 1" x 25.5" End cap with a .250" recess to index on mandrel with a 3" O.D. Aluminum drive mandrel. Grade 8 mandrel bolt (7/16"-20 thread) Mandrel spacer to properly space and align the mandrel pulley pack. Kit Includes (1) Speedway Adjustable Small Block Fits Chevy Aluminum Short Water Pump (1) Brinn 38030 Gilmer Water Pump Drive Pulley, 28 Tooth (1) Brinn 38016 Gilmer Mandrel Drive Pulley, 16 Tooth (1) Brinn 38061 Mandrel Drive Belt Guide Washer (1) Gilmer Drive Belt (1) Crank Mandrel Drive End Cap Plate (1) Aluminum 3.250 Crank Drive Mandrel, S/B Fits Chevy (1) Crank Drive Mandrel Bolt, Grade-8, 7/16-20 x 6 Inch (1) Speedway Aluminum Spacer for Crank Mandrel Drive, 3 Inch