Product Description
Michigan Motorsports 2.00"/1.55" Stainless High Performance Valve Set
High Flow Stainless Upgrade | Drop-In Performance Valves | Cathedral Port LS Heads
Step up your LS cylinder head performance with Michigan Motorsports Stainless High Performance Valves. Designed as a direct drop-in upgrade for cathedral port LS heads, this valve set improves airflow, durability, and overall engine efficiency without requiring additional machine work. Constructed from premium 21-4N stainless alloy, these one-piece forged valves are built to handle increased heat and stress from performance applications, making them ideal for both street and high-performance builds.
Key Features & Benefits
- High Strength 21-4N Stainless Construction – Forged from premium stainless alloy to withstand extreme heat and high RPM conditions, delivering long-lasting durability in performance and boosted applications.
- Improved Airflow Design – Undercut valve stems and swirl polished heads increase airflow compared to factory GM valves, helping maximize horsepower and engine efficiency.
- Hardened & Chrome Plated Components – Features hard chrome plated stems and hardened tips to reduce wear, improve longevity, and ensure consistent valvetrain operation.
- Direct Drop-In Fitment – Designed to match OEM valve sizes for easy installation with no modifications required on compatible cathedral port LS cylinder heads.
- Complete 16-Valve Set – Includes both intake and exhaust valves, providing a complete solution for cylinder head refreshes or performance upgrades.
What’s Included
- (8) 2.000" Intake Valves
- (8) 1.550" Exhaust Valves
Fitment
- Fits 1997–2013 Cathedral Port LS Cylinder Heads (Excludes 706 and 862 castings)
- Compatible Head Castings: 243, 799, 317, 241, 853, 806
- Engine Compatibility: LS1, LS6, LS2, LQ4, LQ9, LS4, LY2, L20, LY5, LMG, LMF, LH6, LC9, LH8, LH9, L33
Important Notes
- Will not fit 706 or 862 cylinder head castings due to smaller factory valve sizing.
- Designed as a direct replacement for OEM valve sizes—no machining required on compatible heads.
