Small Block Chevy Short Water Pump HTD Drive Kit

Both upper and lower pulleys included. Upper 35 tooth pulley, 25 tooth lower pulley and 23.6" HTD belt. 43% reduction to eliminate overheating and belt slippage. Adjustable water pump 910-15582 is recommended for use with this kit. Must be used in conjunction with Mandrel Drive Kit # 913-15920 as noted below. Note: This  kit will work with most "short" water pumps, but hub heights do vary slightly depending on manufacturer. Some modification of the mounting holes may be required. This kit WILL NOT work with "long" water pumps as the crankshaft to hub center height is 5/16" greater than that of a "short" pump. Get the correct pulleys for your application by learning which water pump you have as explained in our tech article. SBC - Short vs Long Water Pump.