FAST 146074-8 Short Velocity Stack Set for LSXHR 103mm Intake Manifold

The FAST 146074-8 short velocity stack set is designed specifically for the LSXHR 103mm intake manifold, providing precise tuning capabilities for high-performance LS engine applications. These interchangeable velocity stacks allow racers and engine builders to fine-tune powerband characteristics and optimize airflow dynamics.

Key Features:

• Short-length velocity stacks for LSXHR 103mm intake manifold
• Interchangeable design allows mixing and matching with tall and medium stacks
• Enables cylinder-by-cylinder tuning for maximum performance optimization
• Precision-engineered for consistent airflow and power delivery
• Ideal for custom tuning race engines and dyno optimization

These short stacks are part of FAST's complete velocity stack system that includes tall, medium, and short options. By experimenting with different stack heights across individual cylinders or runner groups, engine builders can shift torque curves, improve throttle response, and maximize power output for specific applications. Essential for serious racers looking to extract every horsepower from their LS-based powerplant.