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CALL for "UNADVERTISED DISCOUNTED SPECIALS" The NEW PLATINUM series of Pro1 heads have redesigned ports using Dart's exclusive wet-flow technology that conditions the intake charge to produce a more homogenous air/fuel mixture in the cylinders. The result is more efficient combustion and more output. This new head consistently produced gains of 24 peak HP and 20 HP across the operating range.
Dart PRO 1 CNC heads are professional quality competition cylinder heads. Every intake port, exhaust runner, valve bowl, and combustion chamber is 100% CNC machined on special dedicated PRO 1 castings. CNC machined 227cc intake ports give you optimized flow characteristics out of the box. Our 5-axis machining centers precisely duplicate the port profiles so that every head delivers awesome performance. CNC machined combustion chambers ensure that every chamber has the same volume so that every cylinder has equal compression.The valve seats are machined, not ground, to produce precise angles and radiuses for maximum airflow. |
Cams / Lifters /Timing Sets
On all complete assembly packages, it is very possible that the valve springs are not correct for your camshaft. All valve springs should be checked for compatibility to your camshaft. Severe wear of valve train components and severe engine damage could result from failure to do this. Check spring requirements before heads are installed on the engine. If in doubt please contact your camshaft manufacturer or USA Performance Parts. We do carry optional springs for all of your needs.
