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Manley Pro Flo / Severe Duty 1.590in Exhaust Valves for Chevy LT-1 (6.2L) - Set of 8 - 12347-8

$301.07 $401.42
-25%
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Manley Pro Flo / Severe Duty 1.590in Exhaust Valves for Chevy LT-1 (6.2L) - Set of 8 - 12347-8
$301.07 $401.42
$301.07 $401.42

Fits Chevy LT-1 (6.2L) engines.

Manley Pro Flo / Severe Duty Exhaust Valves are engineered to withstand the extreme thermal loads of high-output gasoline engines. Utilizing Manley's exclusive XH-428 stainless steel alloy, these exhaust valves offer significantly higher tensile strength than standard performance alloys. In rigorous fatigue testing at 1400°F and 40,000 psi, these valves maintained integrity for over 100 million cycles, providing a massive increase in service life over competing components.

Each valve in this set of eight features a swirl-polished underhead and a fully machined combustion face to optimize exhaust gas flow and combustion chamber efficiency. To ensure long-term reliability in high-RPM applications, the valves are finished with chrome-plated stems and hardened tips for superior wear resistance.

  • Manufacturer Part Number: 12347-8
  • Head Diameter: 1.590in
  • Material: XH-428 Stainless Steel Alloy (Exhaust)
  • Stem Construction: Chrome-plated stems with hard tips
  • Finish: Swirl-polished underheads and machined faces
  • Quantity: Set of 8

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