Dart 11421111P Cylinder Head Aluminum Small Block Chevy Pro1 200cc 72cc 2.020″ x 1.600″ Straight Plug, Assembly w/ 1.250″ Single Springs for Hydraulic Flat Lifters

Dart 11421111P Cylinder Head Aluminum Small Block Chevy Pro1 200cc 72cc 2.020″ x 1.600″ Straight Plug, Assembly w/ 1.250″ Single Springs for Hydraulic Flat Lifters 

Material: RMR Cast Aluminum Alloy

Valve Angle: 23° (stock)

Intake Port Volume: 200cc

Intake Valve: 2.020”

Exhaust Valve: 1.600”

Springs: 1.250″ Single Springs for Hydraulic Flat Tappet Cam Max Lift: .510″

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.