Chevy Big Block Short-Style High-Flow Mechanical Water Pump - Chrome
Chevy Big Block Short-Style High-Flow Mechanical Water Pump - Chrome
SKU: SKU: HC8021C
In stock

Product Details
Features
- High-volume pump flow helps circulate coolant more efficiently through the radiator and engine passages
- 7.000 in. hub height and 0.625 in. pilot diameter help maintain proper pulley alignment and belt tracking
- 8-vane clockwise impeller design helps maintain steady coolant movement at varying engine speeds
- Chrome Aluminum housing finish adds corrosion resistance with a cleaner performance appearance
Description
This Chevy Big Block Short-Style High-Flow Mechanical Water Pump is designed for Chevrolet Mark IV Big Block V8 engines, including 396, 402, 427, and 454 applications. Featuring a high-volume 8-vane aluminum anti-cavitation impeller and lightweight aluminum housing, it helps improve coolant circulation while maintaining compatibility with short-style accessory drive systems.
Pulley Alignment
7.000 in. hub height and 0.625 in. pilot diameter help position the pulley and fan drive during installation.
Impeller & Flow Design
The 8-vane clockwise high-volume impeller setup helps move coolant steadily through the block, heads, and radiator circuit.
Installation Notes
Confirm gasket included: yes, mounting hardware included: no, back housing included: yes before final assembly.
Specs
| Color | Silver |
| Fan Clutch Included | No |
| Finish | Chrome |
| Gasket Included | Yes |
| Grade Type | Performance |
| Housing Material | Aluminum |
| Hub Height | 7.000 in. |
| Hub Hole Quantity | 8 |
| Hub Thickness | 0.500 in. |
| Impeller Material | Aluminum |
| Impeller Rotation | Clockwise |
| Impeller Vane Quantity | 8 |
| Includes Back Housing | Yes |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 4 |
| Outlet Quantity | 1 |
| Pilot Diameter | 0.625 in. |
| Pulley Included | No |
| Pump Flow | High-volume |
| Thermostat And Housing Included | No |
| Water Pump Drive Type | Mechanical |
Engine Fitment
COMPATIBLE WITH
CHEVROLET BIG BLOCK V8 GEN. II (MARK IV)
• 6.5 L / 396 in3
• 6.6 L / 402 in3
• 7.0 L / 427 in3
• 7.4 L / 454 in3
NOTES
Verify hub height, pulley spacing, and accessory bracket configuration before ordering to ensure compatibility with your existing short-style water pump setup.
Q&A
What applications is this water pump compatible with?
This water pump is commonly used on Chevrolet Big Block-powered muscle cars, street rods, restoration projects, trucks, and performance builds utilizing a short-style accessory drive system. Verify pulley alignment and bracket compatibility before installation.
Will this water pump fit my engine?
This water pump is designed for Chevrolet Mark IV Big Block V8 engines including 396, 402, 427, and 454 applications. It is intended for engines using a short-style water pump configuration. Verify your current water pump dimensions and accessory-drive setup before ordering.
What does a water pump do?
A water pump circulates coolant through the engine and radiator to help maintain proper operating temperature.
What material is this water pump made from?
This water pump is made from aluminum, which helps with durability and heat dissipation.
What type of impeller does this water pump use?
This water pump features an 8-vane cast aluminum anti-cavitation impeller designed to improve coolant flow and help reduce cavitation compared to many stock water pump designs. TSP high-flow pumps are designed to flow significantly more coolant than stock-style pumps.
Does this water pump include a gasket?
Yes, this water pump includes a gasket for installation.
Is this water pump suitable for performance applications?
Yes, this water pump is designed to support performance and upgraded cooling systems.
Will this water pump help prevent overheating?
Yes, a properly functioning performance water pump can improve coolant circulation and help reduce overheating.
Is this a good upgrade from a stock water pump?
Yes, this water pump is a strong upgrade for improving cooling efficiency and reliability.
Do I need to verify rotation before installation?
Yes, water pump rotation must match your belt drive system to ensure proper coolant flow.
Can this water pump be used with aftermarket radiators?
Yes, this pump can be used with upgraded cooling systems when properly matched to the engine setup.
How do I know if I need a short or long water pump?
Short and long water pumps use different hub heights and accessory-drive spacing. This pump uses a short-style configuration with a 7.000-inch hub height and must be matched with compatible pulleys, brackets, and accessory drive components for proper alignment.
Emissions Notice
This product does not affect vehicle emissions and is not subject to emissions compliance regulations.
Chevy Big Block Short-Style High-Flow Mechanical Water Pump - Chrome
This Chevy Big Block Short-Style High-Flow Mechanical Water Pump is designed for Chevrolet Mark IV Big Block V8 engines, including 396, 402, 427, and 454 applications. Featuring a high-volume 8-vane aluminum anti-cavitation impeller and lightweight aluminum housing, it helps improve coolant circulation while maintaining compatibility with short-style accessory drive systems.
Pulley Alignment
7.000 in. hub height and 0.625 in. pilot diameter help position the pulley and fan drive during installation.
Impeller & Flow Design
The 8-vane clockwise high-volume impeller setup helps move coolant steadily through the block, heads, and radiator circuit.
Installation Notes
Confirm gasket included: yes, mounting hardware included: no, back housing included: yes before final assembly.
COMPATIBLE WITH
CHEVROLET BIG BLOCK V8 GEN. II (MARK IV)
• 6.5 L / 396 in3
• 6.6 L / 402 in3
• 7.0 L / 427 in3
• 7.4 L / 454 in3
NOTES
Verify hub height, pulley spacing, and accessory bracket configuration before ordering to ensure compatibility with your existing short-style water pump setup.
SPECIFICATIONS
Color: Silver
Fan Clutch Included: No
Finish: Chrome
Gasket Included: Yes
Grade Type: Performance
Housing Material: Aluminum
Hub Height: 7.000 in.
Hub Hole Quantity: 8
Hub Thickness: 0.500 in.
Impeller Material: Aluminum
Impeller Rotation: Clockwise
Impeller Vane Quantity: 8
Includes Back Housing: Yes
Mounting Hardware Included: No
Mounting Hole Quantity: 4
Outlet Quantity: 1
Pilot Diameter: 0.625 in.
Pulley Included: No
Pump Flow: High-volume
Thermostat And Housing Included: No
Water Pump Drive Type: Mechanical