Chevrolet small block aluminum crankshaft pulley, long water pump, single groove, v-belt, Transdapt 9484. Made of 356 aluminum alloy, heat treated to T-6 specs. Pulley diameter is 6 9/16" with a 2 7/8" depth.
HOW TO IDENTIFY YOUR PULLEY DESIGN: The "long" water pump stands out from the timing cover about a "fingers width". The "short" water pump almost touches the timing cover. The long water pump was commonly used on 1975 and newer Chevrolet small block engines but can be used on older engines using the long water pump. To use this pulley on older engines, all accessory brackets and pulleys must be designed for the long water pump.
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