Cast aluminum single groove V-belt crankshaft pulley for use with '55-'68 Small Block Chevy short style water pumps. Precision machined aluminum construction Lightweight and strong Single groove for V-belt This pulley has "0" offset and is flat against balancer From edge of pulley to center of V-belt groove is 5/16" Diameter is 6-5/8" This pulley is garage sale priced because it has been installed. NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS
Speedway Cast Aluminum double groove pulleys for Small Block Chevy feature a 20% reduction. Reduction pulleys have a smaller diameter which slows the speed of your fan, water pump, and alternator to reduce drag for more top-end horsepower. Plus, high RPM water pump operation is improved due to reduced fluid cavitation. Machined from lightweight cast aluminum Superior belt retention with extra-deep grooves 20% reduction slows accessories down for less drag Adds top-end horsepower Reduces water pump impeller speed below cavitation threshold Improved high-RPM cooling capabilities 910-15482 ...
Both upper and lower pulleys includedUpper35 tooth pulley 25 tooth lower pulley and 23.6" HTDbelt43% reduction to eliminate overheating and belt slippageAdjustable water pump 910-15582 is recommended for use with this kitNote: 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.
Both upper and lower pulleys includedUpper 28 tooth pulley 16 tooth lower pulley and 22-1/2" Gilmer belt43% reduction to eliminate overheating and belt slippageAdjustable water pump 910-15582 is recommended for use with this kitNote: 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.