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Big Block Chev Short Water Pump Cast Alloy 3/4" Shaft with 5/8" Fan Pilot Snout
$226.10
SKU: AF64-2355
Reliable shipping
Flexible returns
Big Block Chevy Short Water Pump — Natural Cast Aluminum
Designed for street-driven Big Block Chevy engines, this Aeroflow short water pump blends lightweight natural cast aluminum with robust internals to deliver dependable cooling under daily driving and spirited performance. The classic natural finish reduces weight and adds durability, making it a practical upgrade over OEM units.
- Short water pump design tailored for Big Block Chevy engines
- Natural cast aluminum construction for weight savings and improved cooling potential
- 3/4" shaft with 5/8" fan pilot snout ensures secure belt alignment with standard pulleys
- Six-blade impeller with curved vanes for maximum flow and balanced pressure to both sides of the block
- Impeller design minimizes high-RPM cavitation and resists cracking, corrosion, and fatigue
- 1/2" NPT ports: passenger side (heater hose) and top (bypass hose)
- 3/4" ultra-duty bearings engineered for longevity under street use
- Compatible with OEM accessories and pulleys for straightforward installation
What’s included: 2 x 1/2" NPT plugs, 2 x water pump gaskets, and 1 x straight 5/8" barb to 1/2" NPT heater hose fitting.
Key Benefits and Use Cases
- Reliable cooling across a wide RPM range, helping to maintain consistent operating temperatures during daily driving and performance sessions
- Lightweight cast aluminum body reduces parasitic drivetrain load without sacrificing durability
- Deliberate porting for heater and bypass hoses simplifies installation and OEM compatibility
- Ideal upgrade for classic or modernized Big Block Chevy street setups seeking dependable coolant flow
Specifications at a Glance
- Style: Short water pump
- Finish: Natural cast
- Material: Cast aluminum
- Shaft size: 3/4"
- Fan pilot snout: 5/8"
- Bearings: 3/4" ultra-duty
- Hose fittings: 1/2" NPT (heater and bypass ports)
- RPM limit: up to 5,500 RPM
- Applications: Street use on Big Block Chevy engines
Note: Not recommended for engines exceeding 5,500 RPM.