Brand: Dart

Dart 11711143P Cylinder Head Aluminum Small Block Chevy Pro1 230cc 64cc 2.080″ x 1.600″ Straight Plug, Assembly w/ 1.550″ Dual Springs for Roller Lifters Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 230cc Intake Valve: 2.080” Exhaust Valve: 1.600” Springs: 1.550″ Dual Springs for Solid Roller Cam Max Lift: .700″ Chamber Volume: 64cc

Dart 11711143PF Cylinder Head Aluminum Small Block Chevy Pro1 230cc 49cc 2.080″ x 1.600″ Straight Plug, Assembly w/ 1.550″ Dual Springs for Roller Lifters Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 230cc Intake Valve: 2.080” Exhaust Valve: 1.600” Springs: 1.550″ Dual Springs for Solid Roller Cam Max Lift: .700″ Chamber Volume: 49cc

Dart 11720040P Cylinder Head Aluminum Small Block Chevy Pro1 230cc 64cc 2.080″ x 1.600″ Straight Plug, Bare Casting Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 230cc Intake Valve: 2.080” Exhaust Valve: 1.600” Chamber Volume: 64cc Plug Types: Straight  Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+ cubic inch engines.

Dart 11721143P Cylinder Head Aluminum Small Block Chevy Pro1 230cc 64cc 2.080″ x 1.600″ Straight Plug, Assembly w/ 1.550″ Dual Springs for Roller Lifters Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 230cc Intake Valve: 2.080” Exhaust Valve: 1.600” Springs: 1.550″ Dual Springs for Solid Roller Cam Max Lift: .700″ Chamber Volume: 64cc

Dart 11810040P Cylinder Head Aluminum Small Block Chevy Pro1 230cc 72cc 2.080″ x 1.600″ Straight Plug, Bare Casting Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 230cc Intake Valve: 2.080” Exhaust Valve: 1.600” Chamber Volume: 72cc Plug Types: Angled Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+ cubic inch engines.

Dart 11811143P Cylinder Head Aluminum Small Block Chevy Pro1 230cc 72cc 2.080″ x 1.600″ Straight Plug, Assembly w/ 1.550″ for Roller Lifters Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 230cc Intake Valve: 2.080” Exhaust Valve: 1.600” Springs: 1.550″ Dual Springs for Solid Roller Cam Max Lift: .700″ Chamber Volume: 72cc Plug Types:

Dart 11820040P Cylinder Head Aluminum Small Block Chevy Pro1 230cc 72cc 2.080″ x 1.600″ Straight Plug, Bare Casting Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 230cc Intake Valve: 2.080” Exhaust Valve: 1.600” Chamber Volume: 72cc Plug Types: Straight Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+ cubic inch engines.

Dart 11821143P Cylinder Head Aluminum Small Block Chevy Pro1 230cc 72cc 2.080″ x 1.600″ Straight Plug, Assembly w/ 1.550″ Dual Springs for Roller Lifters Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 230cc Intake Valve: 2.080” Exhaust Valve: 1.600” Springs: 1.550″ Dual Springs for Solid Roller Cam Max Lift: .700″ Chamber Volume: 72cc

Dart 11970040P Cylinder Head Aluminum Small Block Chevy Pro1 227cc 66cc 2.080″ x 1.600″ Straight Plug, Bare Casting CNC Ported Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 227cc CNC Intake Valve: 2.080” Exhaust Valve: 1.600” Chamber Volume: 66cc Plug Type: Angle Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+

Dart 11971142P Cylinder Head Aluminum Small Block Chevy Pro1 227cc 66cc 2.080″ x 1.600″ Straight Plug, Assembly w/ 1.437″ Dual Springs for Hydraulic Roller or Flat Tappet Lifters CNC Ported Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 227cc CNC Intake Valve: 2.080” Exhaust Valve: 1.600” Springs: 1.437″ Dual Springs for Hydraulic Roller

Dart 11971143P Cylinder Head Aluminum Small Block Chevy Pro1 227cc 66cc 2.080″ x 1.600″ Straight Plug, Assembly w/ 1.550″ Dual Springs for Roller Lifters CNC Ported Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 227cc CNC Intake Valve: 2.080” Exhaust Valve: 1.600” Springs: 1.550″ Dual Springs for Solid Roller Cam Max Lift: .700″

Dart 11980060P Cylinder Head Aluminum Small Block Chevy Pro1 245cc 66cc 2.100″ x 1.600″ Straight Plug, Bare Casting CNC Ported Material: RMR Cast Aluminum Alloy Valve Angle: 23° (stock) Intake Port Volume: 245cc CNC Intake Valve: 2.100” Exhaust Valve: 1.600” Chamber Volume: 66cc Plug Type: Angle Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+