The GT3's 3.6-liter flat-six makes 415 horsepower. In case you don't have your abacus handy, that's 115.3 horsepower per liter-higher specific output than the Ferrari F430. No turbos, no nitrous-oxide canisters, no drop-off solid-rocket boosters. Just 8400 rpm of shattering, naturally aspirated head-rush. Lightweight components (pistons, rods, crank) help keep the six from pulling a supernova at the redline, special heat-resistant light-alloy heads and those sodium-filled valves enable it to survive the 8000-rpm furnace, a dry sump maintains oil circulation even in the maelstrom, and infinitely variable intake cams and a variable intake manifold (those resonance flaps) ensure that the torque curve is as fat as a Churchill cigar....
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