Hilborn Fuel Injection Short Runner 392/426 Hemi Velocity Stack (Set of 8) For Sale

TLM 392/426 Hemi Hilborn Fuel Injection Velocity Stacks

Clean up your engine bay and unlock the true roar of your Hemi. The Tough Luck Motorsports (TLM) Velocity Stacks are the streamlined induction solution for 392 and 426 Hemi engines running Hilborn Fuel Injection systems. This upgrade eliminates traditional, heat-absorbing metal tubes and provides a precision-engineered, smooth airflow path for maximum throttle response, volumetric efficiency, and an aggressive aesthetic.

Engineered and manufactured in Surprise, Arizona, these stacks are 3D printed from Zyltech Glass Fiber Reinforced ASA, ensuring your intake stays cool and rigid when the competition melts. This shortened runner is ideal for high-RPM applications.

The \"Glass Fiber ASA\" Advantage: Defeat Heat Soak

Metal intakes get hot—fast. Traditional aluminum or steel velocity stacks absorb engine heat rapidly, transferring it to the incoming air. Our velocity stacks are made from advanced Glass Fiber ASA, which acts as a thermal insulator rather than a conductor. This keeps your intake air temperatures (IATs) significantly lower, preventing power loss from heat soak on the street or the drag strip.

• Heat Deflection: Rated for 97–99°C (206–210°F), this material withstands extreme engine bay and intake manifold temperatures without softening or warping.

• Structural Rigidity: Reinforced with 15% Glass Fiber, the stack is incredibly stiff (Young\'s Modulus: 2540–2890 MPa), ensuring the bellmouth won\'t distort under the high vacuum of a wide-open throttle pull.

• Chemical Resistant: Impervious to race fuel, oil, and UV radiation, ensuring a long service life under the hood.

Key Features

• Optimized Bellmouth Design: Features a continuous, smooth flare engineered to maximize airflow velocity and cylinder filling on Hilborn individual runner setups.

• Thermal Isolation: Non-metallic construction aggressively blocks radiant heat transfer from the engine block and manifold.

• Factory-Plus Finish: The matte black, textured surface provides a sinister, high-end appearance that complements both classic builds and modern engine bays.

• Direct-Fit Flange: Integrated mounting base matches standard Hilborn hardware patterns for a seamless, plug-and-play installation—no custom fabrication in the Box?

  This listing is for a full, complete set of stacks.

  • 8x TLM 392/426 Hemi Hilborn Short Velocity Stack (Zyltech Glass Fiber ASA)

  • 8x TLM Velocity Stack Gaskets (95A TPU)

  Vehicle Fitment (Applications)

  • Chrysler 392 c.i. FirePower Hemi V8 (Equipped with Hilborn Fuel Injection)

  • Chrysler 426 c.i. Elephant Hemi V8 (Equipped with Hilborn Fuel Injection)

  • Custom builds utilizing Hilborn manifold architecture