Description
Engineered for severe-duty racing programs and high-boost applications, Callies crankshafts for the Gen IV LS platform offer premium structural integrity and fatigue resistance. Forged from high-grade 4330 steel, this crankshaft delivers superior core strength and impact toughness over standard 4340 forgings. With a 3.750" stroke, it provides an ideal configuration for medium-displacement builds seeking an optimal rod-to-stroke ratio and reduced piston rock, paired with standard 2.559" LS mains and common 2.100" rod journals.
| Specification | Detail |
|---|---|
| Engine Platform | GM Gen IV LS Series |
| Material | Forged 4330 Steel |
| Rear Main Seal | 1-Piece Seal |
| Stroke | 3.750" |
| Main Journal Diameter | 2.559" |
| Rod Journal Diameter | 2.100" |
Features:
- Precision forged from premium 4330 alloy steel for maximum tensile strength and fatigue life
- Versatile 3.750" stroke geometry optimized for high-RPM stability and improved piston dwell times
- Precision ground and micro-polished 2.559" main and 2.100" rod journals for excellent bearing longevity and oil control
- Engineered for direct fitment in 1-piece rear main seal Gen IV LS engine blocks
- Built to endure high cylinder pressures across turbocharged, supercharged, and nitrous-assisted applications
Details
Shipping Information
- H12.00"
