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 weight off your valve train, which is crucial for letting your engine rev higher and faster. This means better performance, especially when you're pushing the engine hard or running it at extended high RPMs, like you would in racing or aggressive street applications.

What sets these valves apart is their one-piece forged construction. This method ensures a solid, durable part with consistent grain flow, avoiding the potential weak spots you might find in other designs. Manley uses top-tier titanium alloys, carefully chosen for their strength, hardness, and ductility at high temperatures, striking a good balance for demanding engine conditions. They're machined with precision in advanced CNC centers to very tight tolerances, ensuring they perform exactly as they should. Each valve is thoroughly inspected to meet Manley's high standards for reliability and performance.

This set includes 8 exhaust valves, each weighing about 75 grams, with a 1.600-inch head diameter and a 0.3135-inch stem diameter. They feature the Chevy LS style keeper grooves and inserted hard tips. It's important to note that while AFR heads typically have .3147-inch guides, Manley recommends checking and properly sizing your guides to the .3135-inch Manley valve stems to achieve the correct valve clearances. You'll need Manley valve locks, part numbers 13098-16 or 13153-16, depending on your spring and retainer setup.