PRO1 LS 15° 225cc intake runner covers applications from street cars and trucks to racing. As cast ports flow more than many ported designs at a much more affordable price.

Dart’s 15° 225cc Aluminum cathedral port cylinder head for GM LS series small block V8 engines offers higher performance and more versatility than factory designs.

The Dart LS high performance cylinder head has better airflow, more efficient combustion chambers, and more user friendly features than production LS castings.

The Dart LS style cylinder head retains stock valve angles, stock valve locations and stock accessory mounting holes to make installation easy. Virtually everything else has been improved.

Heads are sold individually.