Manley Performance

Manley Chevy LS-1/LS-2 (LS-6) Head Small Block Severe Duty/Pro Flo Hollow Intake Valves (Set of 8)

SKU 11682H-8Sold out
$694.19$925.59Save $231.40

  • Ships fast from US warehouses
  • Local pickup available
  • Professional install & dyno tuning in-house

Manley Chevy LS-1/LS-2 (LS-6) Head Small Block Severe Duty/Pro Flo Hollow Intake Valves (Set of 8)

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.

Fitment

Manley Valve - Intake, Valve-LS1 P/F 2.080 HOLLOW.

Specifications

Manufacturer part number
11682H-8
UPC
807298069715
Shipping weight & size
4.00 lb, 11.75 × 6.75 × 2.5 in

Notices

  • WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
  • Special order item — ships direct from the manufacturer; extended lead times may apply.