Crankshaft

This crank is popular for doing 512" stroker setups in an "RB" (413/426/440) block. This crank features the 2.2" (Chevy) smaller and lighter rod journals which allow you to use any off the shelf big block Chevy rods with perfect side clearance. Crank has the following specs: Stroke: 4.250" / Block Type: RB / Main Journal Diameter: 2.750" / Rod Journal Diameter: 2.200" / Rod Journal Width: 2.009" / Pre-Balanced Bobweight: 2400 Grams / Counterweight Diameter: 7.480" / Flange Bolts: 6 x 7/16".