Mandrel 5.000 SBC Alum

The Mandrel 5.000 SBC Alum is a precision crankshaft mandrel designed for small-block Chevrolet (SBC) engine builders and machine shops that require accurate alignment and support during crankshaft balancing, grinding, and inspection. This specialized component is essential for professional machinists and serious enthusiasts who demand repeatable, precise results when preparing high-performance or stock SBC crankshafts for installation.

Manufactured from aluminum, this mandrel delivers lightweight durability without sacrificing dimensional accuracy. The 5.000-inch diameter specification makes it suitable for a range of SBC crankshaft applications, providing the rigidity and concentricity needed to eliminate runout and ensure proper journal preparation. The aluminum construction reduces overall fixture weight while maintaining the stiffness required to support the crankshaft during dynamic balancing and precision grinding operations.

Engine machine shops, speed shops, and restoration facilities benefit most from this mandrel, which features a compact footprint measuring 7.95 inches in length with a 3.8 x 1.9-inch cross-section. This design enables placement in tight shop environments while providing the necessary purchase surface for reliable clamping and support. The precision-honed bore diameter allows it to mount securely on standard balancing equipment and machine center spindles.