LT Gen-5 Crankshaft 3.622 Stroke

The LT Gen-5 Crankshaft 3.622 Stroke from Chevrolet Performance is the foundation component for serious engine builders targeting maximum displacement and torque output in modern LS-based powerplants. This OEM-spec crankshaft is engineered for enthusiasts and professional builders who demand reliability in high-rpm applications, whether for street performance, forced induction builds, or naturally aspirated competition engines. The 3.622-inch stroke dimension directly determines your engine's cubic-inch displacement and bottom-end characteristics, making it critical to specify correctly when designing your engine combination.

This forged crankshaft is manufactured to Chevrolet Performance's exacting standards, ensuring consistent journal sizing, proper balancing, and superior fatigue resistance under sustained high-load conditions. The 3.622-inch stroke paired with compatible bore sizes delivers the displacement envelope you need for stroker applications, allowing builders to achieve larger cubic-inch totals while maintaining the lightweight, compact architecture of the LS platform. Proper dynamic balancing and precision grinding of all journals ensure smooth operation at elevated rpm levels and reduce vibration that can compromise bearing life and overall engine longevity. At 65.44 lbs, the crankshaft's mass is optimized for the Gen-5 platform architecture, complementing modern piston and rod combinations.

Builders upgrading from stock Gen-5 LT platform engines or assembling custom stroker motors will find this crankshaft essential for displacement expansion projects. Compatibility spans LT1, LT4, and LT5 engine families when paired with appropriate bore sizes and stroke-specific rod lengths. Proper installation requires careful sizing of connecting rods, piston selection, and block deck height verification to avoid piston-to-head and piston-to-wall clearance issues. Professional machine shop preparation—including line-boring, surface finishing, and final balancing with your specific rotating assembly—is strongly recommended to ensure optimal performance and durability in your finished engine.