For the 2009 model year, the G8 gets a version of the Corvette's 6.2-liter LS3 V8 engine, with a choice of the standard Hydra-Matic 6L80 six-speed automatic or optional Tremec TR6060 six-speed manual gearbox. A limited-slip differential comes standard with both transmissions.
The Corvette offers the LS3 in two stages of tune: a base version rated at 430 horsepower and 424 pound-feet of torque or a slightly hotter variant that makes 436 hp and 428 lb-ft. But the 2009 G8 GXP will make only 402 hp and 402 lb-ft.
The current G8 comes in two flavors. The base 2008 model gets a 256-hp 3.6-liter V6 and is priced from $27,595. The uplevel G8 GT features a 361-hp 6.0-liter V8 and lists for $29,995.
Pontiac has not priced the 2009 G8 GXP, which goes on sale this fall, but one Pontiac official told us that he expects it to come in "just under $40,000."
The car is projected to accelerate from zero to 60 mph in about 4.7 seconds, with a quarter-mile time of 13.0 seconds. The GXP will ride on 245/40R19 performance tires and 19-inch polished aluminum wheels. Brembo brakes are part of the package.
To differentiate the top-of-the-line GXP from its garden-variety G8 siblings, Pontiac has crafted a new front fascia with a lower splitter, as well as a new rear diffuser. The cabin is trimmed in satin and chrome, with leather seats, steering wheel and shift lever and alloy pedals.
What this means to you: 400 horsepower for $40K? Not a bad deal if you're looking for a decent-sized sport sedan with an optional manual. — Paul Lienert, Correspondent
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