Callies APP-31V-AS LS Apex 4340 Forged Crankshaft with 4.25 Inch Stroke for GM LS-Series Engines

The Callies APP-31V-AS LS Apex Series forged crankshaft is engineered for high-performance GM LS-Series engines, offering a durable and reliable foundation for competitive and street applications. Crafted from high-strength 4340 steel, this crankshaft features a 4.250-inch stroke, providing increased displacement and power potential. Its one-piece steel construction ensures rigidity and longevity under demanding conditions, making it suitable for both naturally aspirated and forced induction setups. The internal balance design enhances smooth operation, reducing vibration and wear over time. Equipped with a 58X reluctor, this crankshaft is compatible with modern engine management systems, facilitating precise ignition and fuel control. The forged construction and precise machining deliver excellent strength-to-weight ratio, enabling high RPM operation and improved engine response. Designed specifically for GM LS-series engines, this component is ideal for engine builders seeking to optimize performance, durability, and reliability in street, strip, or racing environments.

Features:

• Forged 4340 Steel Construction for Strength and Durability

• 4.250 Inch Stroke for Increased Displacement and Power

• Internal Balance Design for Smooth Operation

• Compatible with GM LS-Series Engines

• Includes 58X Reluctor for Modern Engine Management Systems

• One-Piece Seal Design for Reliability