Dart 11421112P Cylinder Head Aluminum Small Block Chevy Pro1 200cc 72cc 2.020″ x 1.600″ Straight Plug, Assembly w/ 1.437″ Dual Springs for Hydraulic Roller or Flat Tappet Lifters

Dart 11421112P Cylinder Head Aluminum Small Block Chevy Pro1 200cc 72cc 2.020″ x 1.600″ Straight Plug, Assembly w/ 1.437″ Dual Springs for Hydraulic Roller or Flat Tappet Lifters

Material: RMR Cast Aluminum Alloy

Valve Angle: 23° (stock)

Intake Port Volume: 200cc

Intake Valve: 2.020”

Exhaust Valve: 1.600”

Springs: 1.437″ Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam Max Lift: .650″

Chamber Volume: 72cc

Plug Types: Straight

Street performance, restricted oval track, and marine performance upgrade. Mid-range to 6,500 RPM. Best for 383-434 cubic inch engines.

Dart PRO1 23° 200cc Platinum series Head offer increased air flow at high valve lift for large displacement engines. Long wearing Bronze valve guides, screw-in studs, multi-angle intake seats with hardened, radiused exhaust seats are standard. Best of all, our precision cast ports produce outstanding airflow without time consuming porting.

Assemblies include Stainless Steel valves, premium springs, locks, retainers, studs, guide plates and seals.

Heads are sold individually.