Callies Magnum Series Forged 4340 Crankshaft for Small Block Chevy CASAJ21A-MG Weld On NPT Fittings Each terminal has its own

Each terminal has its own tower to eliminate shorting and each tower handles 20 amp

5mm (3/8”) thick mild steel

AF608-06BLK

200-03-30MCC

Callies Magnum Series Forged 4340 Crankshaft for Small Block Chevy CASAJ21A-MG Weld On NPT Fittings Each terminal has its ownCallies Magnum Series Forged 4340 Crankshaft for Small Block Chevy3. 750" Stroke, 2. 100" Pin, 400 Mains CASAJ21A MG SAJ21A MG After years of service, Magnum crankshafts by Callies have established themselves as one of the most durable competition crankshafts ever produced. Magnum crankshafts are manufactured from ultra pure SAE 4340 steel. Callies then subjects this material to multiple heat treatments, resulting in a crankshaft with unsurpassed wear