Product Description
Michigan Motorsports 1.550" Inconel LS Exhaust Valves
Fits 1997-2013 Cathedral Port LS Heads | 1.550" Diameter | Choose Single Valve or Set of 8
Michigan Motorsports 1.550" Inconel LS Exhaust Valves are built for demanding turbocharged, supercharged, and high-temperature LS engine applications where standard stainless valves may not provide the required durability. Manufactured from high-temperature-resistant Inconel alloy, these one-piece forged exhaust valves feature swirl-polished heads, hardened tips, chrome-plated stems, and full-diameter non-undercut stems for strength. Designed as a direct replacement for factory 1.550" exhaust valves in compatible 1997-2013 cathedral port LS cylinder heads, these valves are available individually or in a set of eight.
Key Features & Benefits
- High-Temperature Inconel Alloy Construction: Built from Inconel alloy for extreme exhaust heat environments commonly found in turbocharged, supercharged, and heavily loaded LS engine combinations.
- Direct 1.550" LS Exhaust Valve Replacement: Designed as a direct replacement for factory 1.550" exhaust valves in compatible cathedral port LS cylinder heads.
- One-Piece Forged Design: One-piece forged construction provides a durable valve foundation for high-performance street, racing, boosted, and severe-duty engine applications.
- Chrome-Plated Stem & Hardened Tip: Features a chrome-plated stem and hardened tip for additional durability in demanding valvetrain environments.
- Swirl-Polished Valve Head: Swirl polishing helps support efficient exhaust flow, while the full-diameter non-undercut stem design prioritizes strength.
Specs
- Product Type: LS exhaust valve
- Valve Material: Inconel alloy
- Valve Head Diameter: 1.550"
- Overall Length: 4.915"
- Stem Design: Full-diameter, non-undercut stem
- Stem Finish: Chrome plated
- Tip: Hardened
- Head Finish: Swirl polished
- Quantity Options: Single valve or set of 8 exhaust valves
Notes
- Quantity Selection: Choose either one individual exhaust valve or a complete set of eight exhaust valves before adding the product to cart.
- Head Compatibility: Designed for compatible 1997-2013 cathedral port LS cylinder heads using factory-size 1.550" exhaust valves.
- Valve Verification: Confirm cylinder head casting number, valve head diameter, overall length, stem requirements, valve spring setup, and installed height before purchase.
- Recommended Use: Well suited for compatible boosted LS engines, high-temperature exhaust applications, cylinder head rebuilding, performance valvetrain upgrades, and engine assembly projects.
Key Fitments
- 1997-2013 GM cathedral port LS cylinder heads using 1.550" exhaust valves
- Compatible cylinder head castings: 243, 799, 706, 862, 317, 241, 853, and 806
- LS1, LS6, LS2, and LS4 engine applications with compatible cathedral port heads
- LQ4, LQ9, LY2, L20, LY5, LMG, and LMF engine applications with compatible cathedral port heads
- LH6, LC9, LH8, LH9, LR4, LM7, L59, and L33 engine applications with compatible cathedral port heads
- Fitment note: Verify cylinder head casting number and all factory valve dimensions before purchase. These valves are intended for compatible cathedral port LS heads only.
