After running the new combination with the smaller XE262H cams, we swapped in the larger XE274H ones. The result was an increase in peak power from 308 hp to 317 hp at the same 5,200 rpm. We suspected the intake was now holding us back from producing more power. A prototype of a new intake designed by the author resulted in a huge gain in power from 317 hp to 355 hp. Look for photos and a new test on a real production piece (on the chassis dyno) in a month or two as we (hopefully) eclipse our goal of 300 hp.