and exhaust durations of 215-degrees and 220-degrees respectively, (measured at .050" lift) and .559" valve lift. This cam was specifically designed with the OBD II system in mind and addresses the issue very well. Captain Smogalert never issued a single "Check Engine" citation throughout the test program.
   When reinstalled on the dyno, the results of the modifications were instantly apparent. With a set of TPIS C5 headers routing the exhaust gases out of the engine, peak horsepower rose to 448 while torque jumped to 437 lbs./ft. Of course, some power will be lost when the engine is installed and connected to a C5 exhaust system, but TPI Specialties is working to minimize that. The company is working with Random Technology to develop a replacement "X-pipe" that will connect to the TPIS headers and incorporate a pair of Super High Flow catalytic converters.

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