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Halloween Special Manley Chevy Ls-3/l-99 Small Block Severe Duty Exhaust Valves (set Of 8) Device [QEAvZlCV]

$57.99 $185.99 -69%

Superior LS-3/L-99 Exhaust Valves The Manley Chevy LS-3/L-99 Small Block Severe Duty Exhaust Valves are engineered to deliver unparalleled performance and durability. This set of 8 valves is designed to withstand the rigors of high-temperature gasoli

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Superior LS-3/L-99 Exhaust Valves

The Manley Chevy LS-3/L-99 Small Block Severe Duty Exhaust Valves are engineered to deliver unparalleled performance and durability. This set of 8 valves is designed to withstand the rigors of high-temperature gasoline engines, making them an ideal choice for those seeking top-tier exhaust system components. With their exceptional fatigue life, these valves are built to last, providing reliability and performance that you can count on.
  • Proven Durability: Endured over 100 million cycles in rigorous fatigue tests, demonstrating a 1000 times better fatigue life than competitors.
  • High-Temperature Performance: Engineered for superior performance in high-temperature gasoline engines, tested at 40,000 psi and 1400°F.

Advanced Materials and Construction

These valves are crafted with state-of-the-art materials and construction techniques, ensuring maximum performance and longevity. The XH-428 material used for the exhaust valves offers nearly double the ultimate tensile strength at 1500°F compared to the competition's EV-8. The intake valves, made of NK-844, display over four times the ultimate tensile strength of the best intake valve material available at 1000°F.
  • Chrome Stems and Hard Tips: Enhanced durability and longevity with chrome stems and hard tips.
  • Optimized Combustion: Swirl polished under head areas and fully machined combustion faces for improved airflow and combustion efficiency.

Perfect for Performance Enthusiasts

Whether you're a professional mechanic or a car enthusiast looking to upgrade your Chevy LS-3/L-99 engine, these valves are an excellent choice. With their superior fatigue resistance, high-temperature performance, and advanced materials, they offer a practical solution for those seeking to enhance the performance and lifespan of their engines. These valves are perfect for daily driving, racing, or any application where high performance and reliability are essential.

What Our Customers Say

December 30, 2025

Absolutely no complaints!

My best purchase of the whole month.

- Kaison T..

December 30, 2025

Absolutely no complaints!

A premium product without the premium price.

- Abel B..

December 30, 2025

Absolutely no complaints!

High performance and a very sleek look.

- Finn K..

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