The NEW DART PLATINUM Pro1 Heads have redesigned ports using Darts exclusive wet-flow technology that results in more efficient combustion and more output. This new head consistently produced gains of 24 peak HP and 20 HP across the operating range.
PRO1 heads are engineered for easy installation. They use standard small-block pistons, headers, and valvetrain components, and are bolt-on replacements for most conventional 23 degree heads.
180 - 200 - 215 - 230cc intake ports
64cc or 72cc chambers
Angle or Straight plugs
2.020 Intake Valve - 180 & 200
2.050 Intake Valve - 215
2.080 Intake Valve - 230
Hyd cam springs - 1.250 single, .510 max lift
Rocker studs and Guide Plates
Hyd Roller/Flat Tappet spring-max lift .600 - ADD $100
Roller cam spring - max lift .675 - ADD $150
227cc CNC PORTED Heads Available - SEE AD
Also Available as a Complete TOP END KIT