Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8

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),...

Manley Chevrolet LS3 L-99 (L-92 Head) 1.600in Head Diameter Race Master Exhaust Valves (Set of 8) - 12353-8

Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM

Manley Chevrolet LT1 6.2L 1.590in Head Diameter Race Master Exhaust Valve - Single - 12345-1

Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM

Manley Chevrolet LT1 6.2L 1.590in Head Diameter Race Master Exhaust Valves (Set of 8) - 12345-8

Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM

Manley Chevrolet LT1 6.2L 2.120in Head Diameter Race Flo Intake Valves (Set of 8) - 12348-8

Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM

Manley Chevrolet Small Block 2.080 Head .3415 Stem Severe Duty Pro Flo Intake Valve - Single - 11772-1

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),...

Manley Chevrolet Small Block 2.165in Head .3133in Stem Severe Duty Pro Flo Intake Valve - Single - 11620-1

Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM

Manley Chevrolet Small Block Severe Duty Exhaust Valves 1.500in Head Dia .3415in Stem - Set of 8 - 11747-8

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),...

Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8

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),...

Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8

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),...

Manley Chevy Big Block 2.190in Head Dia 5.344in OAL 5 Deg. Dish Race Master Intake Valves (Set of 8) - 11894-8

Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM

Manley Chevy Big Block Chevy 1.880in Severe Duty Exhaust Valves - 12843-8

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),...