Product Description
Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves
Fits 1999-2006 706 & 862 Cathedral Port Heads | Available Individually or as a Set of 8
Michigan Motorsports 1.890" stainless LS intake valves provide a performance-focused upgrade for compatible factory 706 and 862 cathedral-port cylinder heads. Manufactured from high-strength 21-4N stainless alloy, these one-piece forged valves feature hard chrome-plated stems and hardened tips for durability. Undercut stems and a swirl-polished design improve airflow compared with OEM GM valves and standard aftermarket replacements. Each valve is designed as a direct drop-in replacement for the factory 1.89" intake valve used in the listed LM7, L59, LR4, and LM4 applications. Choose a single replacement valve or a complete set of eight.
Key Features & Benefits
- 21-4N Stainless Alloy: These intake valves are manufactured from high-strength 21-4N stainless alloy, providing an upgraded material for compatible factory LS cylinder heads. This construction makes them a performance-oriented alternative to the original intake valves and standard aftermarket replacements.
- One-Piece Forged Construction: Each valve uses a one-piece forged design developed for strength and durability. The forged construction gives LS engine builders an upgraded intake-valve option for compatible 706 and 862 cathedral-port cylinder-head castings.
- Hard Chrome-Plated Stems: Hard chrome plating is applied to the valve stems, while the valve tips are hardened for additional durability. These features support the valve at the guide and valvetrain contact areas during engine operation.
- Undercut and Swirl-Polished Design: Undercut stems and swirl polishing improve airflow compared with OEM GM valves and standard aftermarket replacements. These performance-focused design features make the valves a valuable upgrade for compatible factory cathedral-port LS cylinder heads.
- Direct 1.890" Replacement Size: The valves are designed as direct drop-in replacements for the factory 1.89" intake valves used in the listed applications. Their specified fitment covers compatible LM7, L59, LR4, and LM4 engines with 706 or 862 cylinder-head castings.
Purchase Options
- Single Intake Valve
- Set of 8 Intake Valves
Specs
- Brand: Michigan Motorsports
- Product Type: Intake Valve
- Valve Diameter: 1.890"
- Material: 21-4N Stainless Alloy
- Construction: One-Piece Forging
- Stem Design: Undercut and Hard Chrome-Plated
- Tip: Hardened
- Valve Finish: Swirl-Polished
- Available Quantities: Single or Set of 8
Key Fitments
- Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862
- Fits Engine Codes: LM7 L59 LR4 LM4
