Manley Ford Boss 429 Stainless Steel Race Master Intake Valves 2.400 Head Dia 5.570 OA Lgt-Set of 8 - 11788-8

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...

Manley Big Block Chevrolet Extreme Duty Intake Valve 2.3in. Head Dia / .3415in. Stem Dia - Set of 8 - 11784-8

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,...

Manley Chrysler Small Block Severe Duty Exhaust Valves 1.625in Head .3715in Stem (Set of 8) - 11783-8

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...

Manley 68-73 Dodge 5.6L Small Block Severe Duty Exhaust Valves 2.020in Head .371in Stem (Set of 8) - 11782-8

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...

Manley SBC 2.080 Severe Duty Pro Flo Intake Valves (Set of 8) - 11772-8

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,...

Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11771-8

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,...

Manley Severe Duty Series Small Block Chevy Stainless Steel Exhaust Valves - Set of 8 - 11763-8

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,...

Manley Severe Duty Series Small Block Chevy Stainless Steel 2.08in Intake Valves - Set of 8 - 11762-8

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,...

Manley Race Master Series Big Block Chevy Stainless Steel 1.88in Exhaust Valves - Set of 8 - 11761-8

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...

Manley Severe Duty Series Small Block Chevy V8 1.600 Stainless Steel Exhaust Valves - Set of 8 - 11755-8

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,...

Manley Severe Duty Series Small Block Chevy Stainless Steel Exhaust Valves - Set of 8 - 11751-8

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,...

Manley Big Block Chevrolet Extreme Duty Exh. Valve 1.88in. Head Dia / .3415in. Stem Dia - Set of 8 - 11743-8

Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:...