Callies Compstar Forged Steel Internal Balance Crankshaft - 4.5 in Stroke - Big Block Chevy - 2-Piece Seal Exhaust Pipe Reducer ECM Calibration Select Switch

ECM Calibration Select Switch

Flexible construction

Wilwood's ULD-32 drilled iron rotors provides effective lightweight options for sprints

MSD Atomic AirForce

Callies Compstar Forged Steel Internal Balance Crankshaft - 4.5 in Stroke - Big Block Chevy - 2-Piece Seal Exhaust Pipe Reducer ECM Calibration Select SwitchProduct Description: Crankshaft Compstar 4. 500 in Stroke Internal Balance Forged Steel 2 Piece Seal Big Block Chevy Callies Performance Products began manufacturing high performance crankshafts in 1989. With many years of engineering and employee experience, Callies has grown to be the industry leader for innovative product design. Callies Performance Products takes pride in staying ahead of the competition with the latest high tech design and