Autoblog

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Here's Top Gear's cure for their idiot dyno test that proved nothing. As much as we love Top Gear, their derision of the GT500 for producing a "mere" 447 horespower on a chassis dyno is pure BS. A 10-percent loss through the drivetrain is stellar, yet the spin from our snarky British friends was that it was somehow subpar. Kenne Bell has the antidote, and it's available in several stages of tune, from streetable to antisocial.

Since the GT500 is factory-equipped with a supercharger, the engine internals have been beefed up for boost, and a water to air intercooler is in place. The Kenne Bell system replaces the stock Eaton blower with its trademark Twin Screw system. The throttle body is also upsized to 75 millimeters versus the stock 60, but the rest of the intake tract remains stock. Rounding out the Stage 1 tuning is an ECU flash, and the end result is 606 horsepower at the rear wheels. Take that, Hamster and Clarkson! Changing out a few other intake components and fiddling with the drive pulley's diameter will net you Stage 2 or 3 tuning, delivering up to 692 horsepower on the rollers. Maybe this kit will serve to quiet some of the carping from the Top Gear pundits, but we think they just don't understand muscle cars. It's a different flavor of performance, that's for sure, and the Kenne Bell upgrades add even more spice.

Thanks for the tip, Drew

[Source: Mustang Life]

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We’ve been without an SVT Lightning for years now and may be without one for a few more, so news of the ROUSH Stage 3 F-150 has found a happy home in our ears. Like the Stage 3 Mustang mentioned below, the F-150 gets a ROUSHcharger system that increases power of the truck’s 5.4L V8 up to 445 hp and a nice round 500 ft-lbs. of torque. The truck gets the visuals included with the Stage 1 kit and the suspension upgrades that come with Stage 2. A set of 20-inch rims, carbon fiber hood scoop and dual side outlet exhausts give the ROUSH pickup an extra dose of bravado to back up the newfound power.

Follow the jump for ROUSH’s official press release and an additional highrez pic.

[Source: ROUSH]

GM Performance Parts announced yesterday the availability of two performance upgrade kits for the supercharged 2.0L Ecotec engine found in the Chevy Cobalt SS Supercharged and Saturn Ion Redline. The Stage 1 kit retails for $500 and adds 31 hp to the engine’s base 205-hp through higher-flow injectors and a new ECU calibration. The Stage 2 kit goes for $750 and includes both components of the Stage 1 kit and adds a smaller supercharger pulley and drive belt to fatten up the powerband’s midsection and increase power to 241 hp and 218 ft-lbs. of torque. Both kits require premium fuel and are available now at all GM dealerships.

[Source: GM]