Chevrolet big block aluminum crankshaft pulley, short water pump, single groove, v-belt, Transdapt 8876. Made of 356 aluminum alloy, heat treated to T-6 specs. Pulley diameter is 6 7/16" with a 7/8" 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 big blocks. All accessory brackets and pulleys must be of the short water pump design.
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