Flange Style, SBC, Style-short, Mandrel Length minus Flange-2.990 Inches, Required Balancer 3-Bolt, 3.20 Inch Bolt
Circle**, Length 3.380 Inches
*For SBC 1/4 Inch thick crank trigger wheels, use part No. 63861 Drive Mandrel Spacer Kit
**Centers off of I.D. of Balancer, via supplied crank-bolt washer