Removing weight has the same net effect as adding power. Lucky for us, has done both with the latest iteration of the all-conquering GT500, and offers up an SVT Performance Package to further sweeten the deal.
The biggest chunk of mass comes off the front axle...a full 102 lb....through an aluminum engine block that replaces the 2010 car's iron casting, and that new block is Ford's first application of a plasma transfer wire arc coating for the cylinder bores. The 5.4-liter V-8's Eaton M122 Roots-type blower still packs in a maximum of 9.0 psi, but now there's a twin-row charge cooler that's 40 percent more effective in reducing intake temperature. As before, all the main twirling and reciprocating bits are forged (steel crank and rods, aluminum pistons), but the exhaust tubing diameter grows from 2 ½ in. to 2 ¾, with an H-pipe crossover instead of the former X-pipe. With 38 percent less backpressure, the new exhaust is primarily responsible for a 10-bhp bump, with total output now at 550 bhp at 6200 rpm and 510 lb.-ft. of torque at 4250 rpm. Not to mention an especially deep, throbbing exhaust note. (Read More)