BBC Crank Pulley Natural Serpentine

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$119.39
MSRP: $122.99
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SKU:MPP7331

SKU: MPP7331

MPN: 7331

Info

SKU:
MPP7331
MPN:
7331

Description

The BBC Crank Pulley Natural Serpentine from March Performance is a precision-engineered crankshaft pulley designed specifically for Big Block Chevy engines running serpentine belt systems. Built for engine builders, hot rodders, and performance mechanics who demand reliable serpentine conversion on high-displacement platforms, this pulley eliminates the complexity of legacy V-belt setups while maintaining optimal cooling efficiency. The 7-inch diameter sizing is purpose-built to match OEM and aftermarket serpentine systems, making it an essential upgrade for modernizing classic Big Block powerplants.

Manufactured from aluminum and finished in a natural clear powder coat, the BBC Crank Pulley Natural Serpentine features a 6-rib serpentine groovepattern engineered for maximum belt grip and minimal slippage under load. The high water flow ratio design optimizes coolant circulation through a long water pump configuration, ensuring thermostat accuracy and preventing hot spots in extended-duration racing or street performance applications. All necessary hardware is included, allowing for straightforward installation without additional fastener sourcing. The lightweight aluminum construction reduces rotational inertia on the crankshaft, contributing to improved throttle response and fuel efficiency in daily-driven builds.

Ideal for Big Block Chevy platforms ranging from 427 to 496 cubic inches, the BBC Crank Pulley Natural Serpentine is the standard choice for engine swaps, restorations, and performance rebuilds where modern serpentine belt reliability is non-negotiable. Installation pairs seamlessly with contemporary alternators, water pumps, and power steering systems, simplifying the transition from traditional multi-belt layouts. Whether you're converting a vintage solid-lifter big block to street duty or optimizing cooling on a carbureted race engine, this pulley delivers the durability and precision fit that professional rebuilders expect. Weighing just 2.64 lbs, it minimizes rotating mass without compromising strength or structural integrity.

SpecificationDetail
Brand
MARCH PERFORMANCE
MPN / Part Number
7331
SKU
MPP7331
Weight
2.64 lbs
Dimensions
7.4 x 5.6 x 7.45 in
Belt Type
Serpentine 6-Rib
Diameter
7 inches
Engine Compatibility
Big Block Chevy
Material
Aluminum
Finish
Natural Clear Powder Coat
Water Pump Compatibility
Long Water Pump
Hardware Included
Yes

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