Description
Product Overview
The Manley Crankshaft is a precision‑machined steel component engineered for the 4340 Small Block Chevrolet 350 with a 4.000″ stroke. Crafted in the United States, this crankshaft features a fully machined exterior that provides superior balance and strength, meeting the rigorous demands of high‑performance applications. With a manufacturer part number 190130, it aligns with OEM specifications while delivering enhanced durability for street and track use.
Usage
Designed for performance enthusiasts, this crankshaft fits seamlessly into rebuilds, upgrades, and custom builds of Chevrolet 350 engines. Whether installing in a classic muscle car, a race‑ready street rod, or a high‑output hot rod, the Manley crankshaft ensures reliable power delivery and smooth operation. 
Why Choose Us
Manley’s reputation for engineering excellence guarantees a crankshaft that meets strict tolerance standards and undergoes rigorous quality testing. Manufactured in the United States, each unit is inspected for balance, surface finish, and material integrity, providing confidence in longevity and performance. Our commitment to precision machining and premium steel sets this crankshaft apart from generic alternatives.
Key Features
- Fully machined steel construction for maximum strength and durability
- Exact fit for 4340 Small Block Chevrolet 350 with 4.000″ stroke
- US‑made with strict quality control and balance testing
- Improves engine reliability under high‑rpm and high‑torque conditions
- Compatible with performance camshafts and aftermarket components
FAQ
Is this crankshaft a direct replacement for the factory part?
Yes, the Manley crankshaft matches the OEM dimensions and bolt pattern, allowing a direct swap without additional modifications.
What material is used for the crankshaft?
The crankshaft is forged from high‑grade alloy steel and fully machined to ensure optimal strength and balance.
Can this crankshaft be used in a race engine build?
Absolutely. Its precision machining and robust construction make it suitable for both street performance and competitive racing applications.
Do I need to replace any other components when installing this crankshaft?
While the crankshaft itself fits directly, it is recommended to inspect and, if necessary, replace bearings, oil pump, and timing components to ensure optimal performance.
What is the warranty on this product?
Manley offers a limited warranty covering manufacturing defects, providing peace of mind for your investment.







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