Callies SAK-21A-MG SBC 4340 Forged Magnum Crankshaft with 3.800 Inch Stroke and Internal Balance

The Callies SAK-21A-MG forged Magnum crankshaft is designed for high-performance small block Chevy engines. Crafted from durable 4340 forged steel, this crankshaft provides strength and reliability under demanding conditions. Featuring a 3.800-inch stroke and internal balancing, it ensures smooth operation and optimal power delivery. The crankshaft includes a two-piece rear seal and is compatible with 400 main bearings, making it suitable for a variety of racing and performance applications. Its precision engineering minimizes vibrations and enhances engine longevity, making it an excellent choice for enthusiasts seeking durability and performance.

Manufactured with high-quality materials, the Magnum crankshaft offers excellent fatigue resistance and torsional strength. Its compact design and robust construction make installation straightforward for professional engine builders and DIY enthusiasts. Whether building a race engine or upgrading a street performance setup, this crankshaft is engineered to meet the demanding needs of high-performance small block Chevy builds. The product is supplied without air restriction, and it is suitable for standard shipping channels, not limited to truck freight only.

Features:

• Material: 4340 forged steel for durability and strength

• Stroke: 3.800 inches for increased power and torque

• Internal Balance: Designed for smooth engine operation

• Seal Type: Two-piece rear seal for reliable sealing

• Application: Compatible with 400 main bearings in small block Chevy engines