Description
Product Overview
The Moroso 64050 crankshaft pulley is engineered for small block Chevrolet engines, combining a lightweight anodized aluminum construction with precision‑machined tolerances. Its extra‑deep belt grooves ensure superior belt retention, especially during rapid engine speed changes. The reduced pulley diameter lessens the load on the fan, water pump, and alternator, helping to preserve horsepower and improve high‑RPM water pump operation.
Usage
Designed for performance‑oriented street and track applications, this pulley fits universally on small block Chevy engines. Ideal for enthusiasts seeking smoother power delivery, reduced parasitic drag, and enhanced cooling efficiency. Whether installed on a daily driver or a race‑ready build, the pulley delivers reliable performance in demanding conditions.

Why Choose Us
Moroso’s reputation for quality automotive components ensures this pulley meets rigorous standards. Each unit undergoes strict quality control, guaranteeing exact fit and durability. The anodized finish resists corrosion, while the lightweight design contributes to overall engine efficiency, making it a trusted upgrade for serious Chevrolet owners.
Key Features
- Precision‑machined from high‑grade aluminum for reduced weight
- Extra‑deep belt grooves provide enhanced belt retention at high RPM
- Smaller pulley diameter reduces fan, water pump, and alternator drag
- Anodized finish offers superior corrosion resistance
- Universal fit for all small block Chevrolet engine configurations
FAQ
Will this pulley fit my 350 ci small block Chevy?
Yes, the Moroso 64050 is designed as a universal fit for all small block Chevrolet engines, including 350 ci models.
Do I need to replace the belt when installing this pulley?
While the pulley is compatible with existing belts, we recommend inspecting the belt for wear and replacing it if any damage is evident to ensure optimal performance.
How does the smaller diameter affect engine performance?
The reduced diameter lessens the mechanical load on accessories, which can free up horsepower and improve water pump efficiency, especially at high engine speeds.
Is the anodized coating durable in harsh environments?
Yes, the anodized finish provides excellent resistance to corrosion and wear, making it suitable for both street and track use.
Can this pulley be installed with standard tools?
Installation requires typical pulley removal tools and a torque wrench. Detailed instructions are included to guide a proper fit.







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