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PRO1 23 180cc Port

PRO1 23° 180cc

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Description

Excellent street, strip, oval track, truck or marine performance upgrade. Maximum torque and throttle response from idle to 6,000 RPM. Best for 327-400 cubic inch engines. Works with most standard components.

Dart’s PRO1 23° 180cc Platinum series heads utilize wet flow technology. Independent tests have demonstrated an average 25 horsepower gain over the original trend setting PRO1 design.

These 180cc as cast heads out perform many larger heads in a wide range of applications. Long wearing Bronze valve guides, screw-in studs, multi-angle intake seats and hardened, radiused exhaust seats are standard.

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

Heads are sold individually.

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Material: RMR Cast Aluminum Alloy

Valve Angle: 23° (stock)

Intake Port Volume: 180cc

Intake Valve: 2.020”

Exhaust Valve: 1.600”

Chamber Volume: 64 or 72cc

Plug Types: Straight or angle

PRO1 180cc 23° – Aluminum (Straight Plug Heads)

64cc Combustion Chambers

11120010P – Bare Head

11121111P – 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”

11121112P – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”


72cc Combustion Chambers

11220010P – Bare Head

11221111P – 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”

11221112P – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”


PRO1 180cc 23° – Aluminum (Angle Plug Heads)

64cc Combustion Chambers

11110010P – Bare Head

11111111P – 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”

11111112P – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”


72cc Combustion Chambers

11210010P – Bare Head

11211111P – 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”

11211112P – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”

PRO1 180 Tech Sheet – H13

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