Reese arranged to take both cars to a dyno before their modifications. First up was the new ZO6, which produced 357.3 hp and 351.8 ft-lb of torque on its third run. Water temperature was 191oF and oil temp was at 210oF. Outside temperature was 53oF. The runs were made in fourth gear from 2,000 rpm to 6,400 rpm, and it took 14 seconds for the car to reach its maximum horsepower. Now that we'd established a baseline, it was time to install the new parts in Denny's ZO6. Reese's crew consisted of himself, David Munder, Chris Harwood, and Jesus Garcia. In a blink of the eye, the center console, wheels, rear suspension, transmission, and torque tube were removed from the new ZO6. Next, the stock pressure plate, clutch, and flywheel were removed and weighed. The three factory parts hit the scale at 51 pounds. The new Fidanza 12.5-pound aluminum flywheel (PN 198571, retails at $439.00), and the 14.5-pound Spec Stage 1 clutch/pressure plate unit (PN SC091, retails at $299.00) totaled 27 pounds--a savings of 24 pounds of rotating weight at the crankshaft! The team installed the new flywheel, clutch, and pressure plate in record time, and they all fit perfectly. Three hours and ten minutes after the first wrench was turned, the crew had finished reinstalling all of the parts, and the car was returned to the dyno!

Fortunately our weather was holding and the outside temperature was 54oF for our repeat test. On the way to the dyno, we noticed a slight increase in clutch pedal pressure over the stock unit, but it was not annoying. Our best of three runs netted 366.6 hp and 360.4 lbs of torque--a gain of 9.3 hp and 8.6 ft-lb of torque. Maximum horsepower was achieved in 11 vs. 14 seconds with the stock parts, and maximum torque was seen in 9 vs. 11 seconds with the stock parts! Back on the road, Denny's Z06 revved a little quicker and required a lighter push on the loud pedal. We could feel the difference. Satisfied with our results, we headed back to the shop to make preparations for the next day.