Manley Performance
Manley Chevy Big Block 4.750in Stroke Crankshaft
SKU: M004 190280
Description
Part #: 190280
Our "Pro Series" 4340 alloy steel crankshafts are available with many value packed and high-performance enhancing features for a wide range of domestic engine applications.
Features:
- Lightweight Design, 4340 Non-Twist Forging: Our crankshafts feature a lightweight 4340 non-twist forging, ensuring durability and performance.
- Enhanced Strength: A multi-step heat treatment process and nitriding enhance the crankshafts' strength and longevity.
- Micro-Polished Journals: Large radius journals are micro-polished to reduce friction and enhance performance.
- Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.
Manley Crankshaft, CRANK-4340 FORGE 4.750 STROKE CCW
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
Fitment Guaranteed
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
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Specifications
| Brand | Manley Performance |
| Part Number | M004 190280 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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