Manley Titanium Exhaust Valve Kit for Small Block Chevrolet AFR Eliminator Heads

If you're building a high-performance Small Block Chevrolet engine with AFR Eliminator heads, these Manley Titanium Exhaust Valves are a serious consideration. They're designed to shave significant weight off your valvetrain, which is crucial for letting your engine rev higher and more freely. This kit includes eight exhaust valves, each weighing in at just 88 grams, making them ideal for applications that spend a lot of time at high RPMs or are built for aggressive camshaft profiles.

Manley makes these valves from a one-piece forged titanium alloy, which gives them excellent durability and strength without the added weight. The forging process ensures a strong grain flow throughout the valve, minimizing potential failure points. They're then precisely machined on advanced CNC equipment to very tight tolerances, ensuring they seal perfectly and perform consistently. The titanium alloy Manley uses is chosen for its balance of hardness, ductility, and fatigue strength, especially at the higher temperatures found in performance engines.

It's important to note that these valves have a specific stem diameter of .3135 inches. While AFR heads typically have guides around .3147 inches, Manley strongly recommends checking and properly sizing your valve guides to ensure the correct clearances for optimal performance and longevity. This kit also features Chevy LS style keeper grooves and inserted hard tips for added durability. You'll need to use Manley valve locks, part numbers 13098-16 or 13153-16, depending on your spring and retainer setup.