FAST 146072-1 LSXhr 103mm Intake Manifold Tall Velocity Stack Individual

The FAST 146072-1 is a single tall velocity stack designed as a replacement or upgrade component for the FAST LSXhr 103mm tunnel ram-style intake manifold. Sold individually, this stack is the ideal solution for cylinder-by-cylinder tuning or replacing a single stack without purchasing a full set.

The tall velocity stack profile promotes increased torque and horsepower production in the lower RPM operating range, making it well suited for street-driven and moderate performance builds. FAST's interchangeable velocity stack system gives tuners the flexibility to mix and match tall, medium, and short stacks across all eight cylinders to precisely dial in the powerband for a specific application.

Key Features:

• Designed exclusively for the FAST LSXhr 103mm intake manifold
• Compatible with both the LS3 and LS7 LSXhr manifold versions
• Tall stack profile targets lower RPM torque and horsepower production
• Interchangeable with medium (146073-8) and short velocity stacks for custom powerband tuning
• Mix-and-match capability allows fine-tuning on a cylinder-by-cylinder basis
• Lightweight polymer construction consistent with the LSXhr manifold system
• Not C.A.R.B. exempt — for off-road/racing use

Whether you're replacing a single damaged stack or experimenting with mixed stack heights to optimize your powerband, the FAST 146072-1 provides the tuning flexibility that serious performance enthusiasts demand from the LSXhr platform.