Manley Performance
Manley Chevrolet LT1 Directed Injected 4340 Forged 4.00in Stroke Pro Series Crankshaft - MANLEYPERFORMANCE194258
- SKU:
- MANLEYPERFORMANCE194258
- MPN:
- 194258
Description
What is the stroke of this crankshaft?
This Manley Performance crankshaft features a 4.000 inch stroke, directly increasing engine displacement for amplified power output.
Is this crankshaft a direct replacement for my factory crankshaft?
This crankshaft is designed as a direct drop-in installation, ensuring seamless integration with your existing engine components.
Manley Forged Crankshafts, specifically the CRANK-4340 4.000 STROKE, deliver the increased displacement crucial for maximum power and torque in performance applications. Engineered for superior strength and durability, this crankshaft will reliably handle extreme engine demands. Trust this forged crankshaft to elevate your engine's performance.
What Owners Say
Owners and enthusiasts running Manley forged cranks report they work really great, particularly when paired with Manley rods and quality pistons in high-performance builds. Users appreciate the value proposition compared to billet options, with some running these cranks successfully in demanding applications. However, the feedback isn't universally positive—at least one builder experienced a failure with a Manley forged crank in the 550-800whp range, and discussions note that forged cranks can start bending and twisting under extreme stress, especially without proper counter-weighting. Despite occasional concerns at upper power limits, Manley forged crankshafts maintain a solid reputation among the performance community as a reliable choice for street and moderate race applications.
Key Features
- CRANK-4340 4.000 STROKE
Why Choose the MAN Forged Crankshafts
Delivers increased displacement for more power and torque.
Achieves superior strength for extreme engine demands.
Provides enhanced durability for sustained high-performance driving.
Transforms your engine's potential for exhilarating acceleration.
Who Is This For?
Street Performance — 9/10
Increases displacement for more power and torque.
Drag Racing — 9/10
Increases displacement for more power and torque.
Racing Competition — 9/10
Increases displacement for more power and torque.
Engine Performance — 10/10
Directly increases displacement for more power and torque.
Track / Autocross — 8/10
Increased displacement contributes to higher power output.
High Speed Desert Running — 8/10
Increased displacement provides more power for speed.
Frequently Asked Questions
How does a Manley Performance forged crankshaft increase engine power?
Manley forged crankshafts increase engine power by delivering increased displacement. This upgrade achieves a usage score of 10 for 'Engine Performance,' directly translating to more horsepower and torque for your build. Experience exhilarating acceleration with this enhanced engine potential.
What is the installation process for a Manley Performance forged crankshaft?
A Manley Performance forged crankshaft is designed as a drop-in installation. This simplifies the upgrade process for enthusiasts and tuners. Ensure you confirm fitment with your specific vehicle for a confident and direct replacement.
Is upgrading to a Manley Performance forged crankshaft worthwhile for street performance?
Upgrading to a Manley Performance forged crankshaft is highly worthwhile for street performance applications. It achieves a usage score of 9 for 'Street Performance,' providing superior strength and enhanced durability for sustained high-performance driving. Transform your engine's potential with this robust component.
Can Manley Performance forged crankshafts handle extreme engine demands in racing?
Manley Performance forged crankshafts achieve superior strength to handle extreme engine demands. Their construction is best for 'Racing Competition' and 'Drag Racing,' both scoring a 9 in the usage matrix. Rely on this component for sustained high-performance and enhanced durability.
What is the general maintenance level for Manley Performance forged crankshafts?
Manley Performance forged crankshafts require a moderate maintenance level. This ensures the sustained high-performance and enhanced durability of the component. Proper care guarantees the crankshaft continues to deliver increased displacement for more power and torque.
Important Notices
⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Browse More: Shop All Crankshafts — Engine Components
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