Small Block Chev Long Water Pump Cast Alloy 3/4" Shaft with 5/8" Fan Pilot Snout

Small Block Chev Long Water Pump - Cast Alloy, 3/4" Shaft with 5/8" Fan Pilot Snout

Engineered for street-ready performance, this Aeroflow long-style water pump is designed specifically for the Small Block Chevy 350. Built from lightweight cast aluminium, it delivers weight savings alongside enhanced durability and cooling potential. The precision six-blade impeller with curved vanes ensures maximum flow, even pressure distribution to both sides of the block, and reduced cavitation at high RPMs.

Key features

• 3/4" shaft with 5/8" fan pilot snout for secure compatibility with performance fan systems.
• 1/2" NPT ports: one on the passenger side for a heater hose, and one on the top for a bypass hose.
• 3/4" ultra-duty bearings for reliable operation under street-driven stresses.
• Six-blade precision impeller with curved vanes to maximize flow, pressure, and even distribution.
• Compatible with all OEM accessories and pulleys, with light-weight construction for better cooling potential.
• Available in long or short styles and finishes (natural cast or polished) within the Aeroflow range.

Included kit

• 2 x 1/2" NPT plugs
• 2 x water pump gaskets
• 2 x pulley shims (1.5mm thick)
• 1 x pilot spacer (16mm height x 20.5mm OD x 10.5mm ID)
• 4 x 3/8"-16 hex bolts (57mm UHL)

Specifications and usage

Designed specifically for street use and not recommended for engines exceeding 5,500 RPM. This pump is built to work with the Small Block Chev 350 long water pump configuration, offering reliable cooling with compatibility for OEM accessories and pulleys.

Why choose this pump

• Improved cooling performance through a high-efficiency, multi-vaned impeller and lightweight aluminium construction.
• Direct compatibility with heater and bypass hose routing thanks to dual 1/2" NPT ports.
• Robust, long-term durability with 3/4" ultra-duty bearings designed for street-driven applications.
• Included mounting hardware and spacers simplify installation and ensure proper alignment with standard pulleys.