Since GT3s are all about going—and feeling—fast, it’s no surprise that an upgraded engine is part of the changes for this second-gen of 997. A bore increase—from 3.9 inches to 4.0—raises displacement from 3.6 liters to 3.8. The bigger engine gets hotter cams with greater valve lift and the addition of variable valve timing to the exhaust cams (the intakes already had it). All together, these changes boost power from 415 ponies to 435 and torque from 300 lb-ft to 317. Despite the displacement increase, the engine’s redline climbs from 8400 rpm to 8500.