Chevrolet big block aluminum crankshaft pulley, short water pump, triple groove, v-belt, Transdapt 8878. Made of 356 aluminum alloy, heat treated to T-6 specs. Pulley diameter is 6 7/16" with a 2 1/4" depth.
HOW TO IDENTIFY YOUR PULLEY DESIGN: The "short" water pump almost touches the timing cover. The "long" water pump stands away from the timing cover about a "fingers width". The short water pump was commonly used on older engines. This pulley is for use with air conditioning and power steering. All engine accessory brackets and pulleys must of of the short water pump design.
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