Assembled Platinum Pro 1 Aluminum Cylinder Head Angled Plug
• Small Block Chevy
• Angle Plug
• Valves: 2.08 in. Intake, 1.600 in. Exhaust
• Valve Springs: 1.550 in.
• Sold Individually
  
  

  Dart 11971142P Pro1 CNC Small Block Chevy 227 Cylinder Head

  Maximum performance/full competition, unlimited oval, and superclasses. 7,000+ RPM, 400+ cubic inch engines. Dart PRO1 23° 227cc CNC heads are professional quality competition cylinder heads. We applied the airflow technology developed in our championship-winning Pro Stock engine program to produce these state-of-the-art heads. Every intake port, exhaust runner, valve bowl, and combustion chamber is 100% CNC machined on special dedicated PRO1 castings. These heads are ideal for high compression, big cubic inch small blocks and are great for supercharged applications. Standard valve angle and spacing are retained to allow for use with off-the-shelf pistons and valve train components. Hardened exhaust seats are compatible with unleaded gasoline. Manganese Bronze valve guides extend cylinder head life.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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