Early SBC Long Water Pump Performance Small Block Chevrolet Standard Clockwise Rotation

• Early Long Water Pump configuration designed specifically for classic Small Block Chevrolet engines.
• Standard Clockwise (CW) Rotation engineered to function perfectly with traditional V-belt pulley systems.
• High performance coolant flow with a precision-matched internal impeller, delivering superior cooling over standard replacement pumps.
• Direct replacement for factory casting numbers like 3953692 and 10049026, supplied with mounting gaskets and seals.

This GASO mechanical water pump is designed for 1969–1986 Small Block Chevrolet engines fitted with a classic early long water pump setup. It operates in a standard clockwise rotation, making it the ideal direct replacement for V-belt driven configurations. This pump is built for street and high-performance applications where consistent cooling, accurate pulley alignment, and long-term durability are required.

All GASO mechanical water pumps are designed and tested to meet or exceed OEM specifications. Using advanced engineering and controlled manufacturing processes, these pumps are built to provide reliable coolant circulation, prevent high-RPM cavitation, and ensure stable operation under a wide range of performance engine conditions.

Specifications

• Product type: Mechanical water pump
• Engine compatibility: Small Block Chevrolet V8 (1969–1986)
• Pump configuration: Early Long Water Pump (LWP)
• Rotational direction: Standard / Clockwise (CW) rotation
• Drive belt type: Traditional V-belt systems
• Hub height: Approximately 6-15/16 inches from block to pulley face
• Performance type: High performance, increased flow
• Replacement type: OEM style direct replacement (Interchanges with GM 12522016, 10049026)
• Includes: Mounting gaskets and installation seals

GASO mechanical water pump features

• Case hardened bearings designed to meet specific radial torque and axial load requirements for increased load capacity and V-belt tension durability.
• CNC machined mounting surfaces for accurate block fitment, precision sealing, and extended component life.
• Inspected and factory pressure tested.
• Heavy-duty metal impeller design curved specifically for clockwise rotation, capable of handling higher torque and operating temperatures than plastic impellers.
• Improved high-RPM performance and maximum resistance to impeller distortion or failure under hard acceleration.
• Chemical resistant metal impeller construction suitable for high mileage engines, seasonal storage, and transport conditions.