Htostar Racing LS Cathedral Port Intake Manifold 102mm Aluminum – Drive-by-Cable TB, Compatible with LS1/LS2/LS6

Htostar Racing presents a purpose-built LS cathedral port intake manifold crafted from premium aluminum. The design features a 102 mm inlet and a taller 210 mm profile to optimize air flow while maintaining factory-like compatibility with throttle bodies and sensors. The unit includes a drive-by-cable throttle body setup, idle air control, and a throttle position sensor connection, offering a straightforward upgrade path for a wide range of LS builds and enthusiast projects.

Compatibility and fit

• Applicable engines: Compatible with LS based engines featuring cathedral port heads; designed for LS1, LS2, LS6 variants and four‑bolt intake with cable drive only, not for drive by wire.
• Vehicle models: Works with Chevy Corvette 97-07, Corvette Z06 01-04, SSR 05-06, TrailBlazer SS 06-09, Cadillac CTS‑V 04-07, Pontiac Firebird/Trans Am 98-02, Pontiac GTO 05-06, and Saab 9-7X Aero 08-09.

Design, materials and connections

• Material and construction: 1/8 inch thick T6061 aluminum for a sturdy yet lightweight build and good corrosion resistance.
• Inlet and dimensions: 102 mm (4.02 inches) inlet, 210 mm tall; features vacuum ports (1/4 NPT & 1/8 NPT) and a rear MAP port (M12 x 1.25) for MAP sensing.

Performance and installation notes

• Throttle body and sensors: Drive-by-cable throttle body, with idle air control and throttle position sensor installed for easy connection.
• Flow and pressure: Flow rate around 1218 CFM; working pressure 85 PSI; burst pressure 245 PSI, supporting strong intake performance within typical operating ranges.
• Fuel injectors and spacers: Designed to fit original LS1 and LS6 injectors; LS2 spacers may be required for a proper fit depending on the configuration.

In real-world use, this manifold can help channel air efficiently into cathedral-port cylinder heads, potentially contributing to crisper throttle response and smoother idle in modified street machines and enthusiast builds. It is designed to suit a variety of engine bays and accessory layouts, reducing clearance concerns when paired with compatible throttle bodies and mounting hardware. As with any intake upgrade, pairing this manifold with the right exhaust, cam profile, and fuel system will help you pursue a balanced, responsive feel without promising specific results.