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SHP 23 180cc Port

SHP 23° 180cc

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Product 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 SHP (Special High Performance) 23° 180cc cylinder heads provide an affordable option to those looking for the weight savings of an Aluminum head for a street performance engine. The SHP is designed to work with most off the shelf components.

The SHP head’s precision cast ports are designed to offer excellent flow and power without the need for CNC porting. Optimized chambers increase combustion efficiency, and multi-angle intake seats and radiused exhaust seats dramatically increase performance. Manganese Bronze valve guides increase the life of the head.

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 Type: Straight

SHP 23° 180cc – Aluminum

64cc Combustion Chambers

127111 – Bare Head

127121 – 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”

127122 – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”


72cc Combustion Chambers

127211 – Bare Head

127221 – 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”

127222 – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”

SHP 180 Tech Sheet – H11

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