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  • Manley Chevy Big Block Chevy 1.880in Severe Duty Exhaust Valves
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Manley Chevy Big Block Chevy 1.880in Severe Duty Exhaust Valves

Manley Performance
MAN12843-8
In stock
Valves
$401.42 $301.07
Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme...
$301.07

Hella 03-04 Volvo C70/S70/V70 / 02-04 S60 2.3L / 02-09 S60 2.4L / 99-06 S80 Boost Control Valve
Hella 03-04 Volvo C70/S70/V70 / 02-04 S60 2.3L / 02-09 S60 2.4L / 99-06 S80 Boost Control Valve
$78.98 $67.13
Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem
Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem
$401.42 $301.07
Manley Chevy Big Block Chevy 1.880in Severe Duty Exhaust Valves
Description
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.
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