11. CHI’s new 3V 208cc cylinder heads are very capable pieces that were developed by Dave Storlien for the 2004 Engine Masters Competition. CHI recommends this particular head for standard stroke engines in the 500- to 550hp range, as well as stroker combinations making between 550-590 hp with solid camshafts. As the intake port roof height is the tallest of CHI’s 3V cylinder heads, it requires its own 3V intake manifold, which CHI also offers. In case you want to take that route, CHI’s 3V intake includes cast fuel injection/nitrous bosses.