Eagle Chevrolet Balance Code - Internal Big Block 454 (Incl Bob Weight in Notes/Drop Ship Order Only

The Eagle B30 is a crankshaft designed for high-performance applications. Constructed from forged 4340 steel, it features a non-twist forging process, multi-stage heat-treatment, and stress-relieving, followed by shot-peening. This crankshaft has undergone X-ray, magnaflux, and sonic testing for quality assurance.

Key specifications include a 3.000-inch stroke, 2.249-inch main journal, and 2.123-inch rod journal. It is designed for internal balance and fits both 1 and 2-piece rear main seal blocks. The journals have a .125-inch radius for increased strength, requiring chamfered bearings, and are precision-ground and micro-polished to under 5 R.A.