are made in the U.S.A. for American Racers. With an expanded line of part numbers, the DragonSlayer is rapidly setting the standard by which other Sportsman crankshafts are measured. These shafts are machined to the tolerances demanded by today’s high performance engine builder. Roundness and taper are held to less than .0003 on all rod and main journal diameters. The final polishing procedures produce excellent load carrying surfaces that ensure extended bearing life and trouble free operation. Each Callies DragonSlayer receives Callies' unique Dura-Tough heat treatment. This process has proven to add extended long-term value to these highly stressed components. Callies heat treat expertise combined with high purity premium 4340 forging produce strength of unparalleled value. All DragonSlayers are produced with standard Chevy rod journal diameters and widths for SBC, BBC, LS1, and
This gen III/IV LS1
DragonSlayer has a 4.00 stroke with 2.100 rod journals. These LS1 crankshafts are machined from premium 4340 forgings and include a rough balance(1800). Each Callies LS1 features PERMA-TOUGH heat treating for added strength and serviceability. DragonSlayer LS1 crankshafts are sold with gun drilled mains and Angalite drilled rod journals.
Hardened with a deep nitride, Compstar cranks are ideal for abusive dirt track environments. All rod journals are drilled and counterweights are profiled for piston clearance.