Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity...

Manley Big Block Chevrolet Street Flo 1.725 Head Dia Exhaust Valves - 10717-8

Manley Big Block Chevrolet Street Flo 1.725 Head Dia Exhaust Valves

Manley Big Block Chevrolet Street Flo 1.880 Head Dia Exhaust Valves - 10727-8

High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity.Chrome Stems and Hard Tips: These valves feature chrome stems and...

Manley Big Block Chevrolet Street Flo 2.190 Head Dia Intake Valves - 10728-8

High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity.Chrome Stems and Hard Tips: These valves feature chrome stems and...

Manley Big Block Chevy 1.880 Dia (+.100 L) Race Master Intake Valves (Set of 8) - 11719-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity...

Manley Big Block Chevy 1.880 Dia Race Master Intake Valves (Set of 8) - 11717-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity...

Manley Big Block Chevy 2.300 Dia .250in Longer Race Master Intake Valves (Set of 8) - 11870-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity...

Manley Big Block Chevy 2.350in Diameter 0.350in Longer Length Extreme Duty Exhaust Valves - Set of 8 - 11880-8

Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat, this stress soars to 40,000 to 60,000 lbs. Manley exhaust...

Manley Big Block Chevy 2.350in Diameter 0.350in Longer Length Extreme Duty Exhaust Valves - Single - 11880-1

Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat, this stress soars to 40,000 to 60,000 lbs. Manley exhaust...

Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity...

Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity...

Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8

Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat, this stress soars to 40,000 to 60,000 lbs. Manley exhaust...