Dart PRO1 227 CNC heads are professional quality competition cylinder heads. Dart applied the airflow technology developed in our championship winning Pro Stock engine program to produce these state of the art heads.
227cc 100% CNC Ported intake ports
66cc CNC machined chambers
2.080 x 1.600 Stainless Valves
1.550 dual roller cam springs, .675 max lift
Titanium retainers and 10 degree locks
Rocker studs and Guide Plates