Catalog

At Callies, design consideration has been given to address the inadequacies of OEM crankshafts for the GT-R engine. Each Callies GT-R crank is carefully monitored, beginning with ultra pure 4330V steel that receives multiple heat treatments through final nitride & polish. Initially introduced with a 94.4mm stroke, additional strokes are now available. For dry sump applications, an extended post option is also available. Callies GT-R crankshafts are machined to accommodate 2.200” Big Block Chevy rod journals. This common diameter will allow engine builders easy access to a wide variety of bearing options. Standard main bearing, post and seal diameters are used throughout this crankshaft.