Cylinder Heads

Manley Severe Duty 8mm x 1.930 L83 5.3L Intake Valves Stainless 12358-8 The Severe Duty® series of valves is the Manley signature in the performance and racing industry. Exhaust material XH-428 and intake material NK-844 is offered by no competitor...

Manley Severe Duty 8mm x 1.560 L83 5.3L Exhaust Valves Stainless 12361-8 The Severe Duty® series of valves is the Manley signature in the performance and racing industry. Exhaust material XH-428 and intake material NK-844 is offered by no competitor...

Manley Race Series 8mm x 1.930 L83 5.3L Intake Valves Stainless 12356-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...

Manley Race Series 8mm x 1.560 L83 5.3L Exhaust Valves Stainless 12359-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...

Dart Stainless Steel GM LS7 1.625 Exhaust Valve 21397625 Dart stainless steel valves are designed to withstand the pressures of high-lift roller cams and feature a head design that promotes high flow. They are constructed of high-strength stainless steel...

Dart Stainless Steel 8mm x 2.200 LS7 Intake Valve 21397200  

Dart Stainless Steel 8mm x 2.080 LS1 Intake Valve 21392080  

Dart Stainless Steel 8mm x 2.055 LS1 Intake Valve 21392055  

Dart Stainless Steel 8mm x 2.020 LS1 Intake Valve 21392020     

Dart Race Series 7/16" Head Stud Kit 66120027 - 23 Bolt For Aluminum LS 10 Degree Next Block  

Dart Race Series 7/16" Head Stud Kit 66120017 - 23 Bolt For Iron LS 10 Degree Next Block  

Dart Pro1 LS7 Gen III 285cc CNC w/ Machining for Jesel Rockers, Assembled for Solid Roller 11061184J Recommended for engines with 4.125” bore or larger. Maximum competition, comp/modified drag racing, circle track, and heavy duty applications...