Moroso Single Groove Crankshaft Pulley - Chevrolet 396-454 - Single Groove - Pre-1969 (With Short Water Pump) - 30% Reduction - 5.25" O.D. SB180020 and are bolt-on replacements for

and are bolt-on replacements for most conventional 23° heads

magna-fluxing

Magnet-In-Wheel Style

Reversible design - can be used as a pusher or puller

Now available from Holley are complete kits that have everything needed for the application

Moroso Single Groove Crankshaft Pulley - Chevrolet 396-454 - Single Groove - Pre-1969 (With Short Water Pump) - 30% Reduction - 5.25" O.D. SB180020 and are bolt-on replacements forPrecision machined from high grade, lightweight aluminum castings Extra deep belt grooves provide added belt retention during rapid changes in engine RPM Small pulley diameter slows fan, water pump, and alternator speed to reduce horsepower robbing drag High RPM water pump operation is improved, reducing impeller speed below cavitation threshold Use 36 x 17 32" wide belt NOTE: Image shows #MOR64050 and is not representative of actual product shipped.