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Dart has introduced the next generation Pro 1 Small Block Chevy cylinder head ... The Platinum Series. Speed Flo technology produced more efficient port designs with improved velocity and airflow. Combustion chambers have been redesigned for improved breathing and controllable combustion.
•Hardened exhaust seats
•Phosphorous exhaust guides
•Manganese intake guides
•5 angle competition valve job on intake
•Full radius on exhaust
•Accepts most stock bolt-on components
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