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• Hennessey performance expanding tuning to include ZR1, GT-R and IS F

  Filed under: Aftermarket , Tuners , Coupes , Sports/GTs , Supercars From the Mustang to the Viper and Veyron, Hennessey Performance has spread its abilities across the performance car spectrum. And with hi-po vehicles like the IS F, ZR1, and GT-R on their way to buyers' garages, John Hennessey says he is working on packages to make all of those cars even higher-po. The IS F looks to be the first in line, with the experiment subject arriving at Hennessey's shop next week. The car will be a test bed for "headers, exhaust and air induction systems first. Then maybe a blower." He's also got his eye on the baddest boy Corvette ZR1, for which his website advertises "700+ HP coming soon!" The physics-defying GT-R is in the crosshairs as well, and if he can make it better than it already is, that would be among the best testaments for his services. Coming down just a notch -- but still up there -- the Cadillac CTS-V and Camaro will get their chances for glory as... Posted Apr 12 2008, 01:01 PM by Autoblog Filed under: Supercars, Tuners, Sports/GTs, Aftermarket, Coupes, GT-R, camaro, tuning, zr1, ZR-1, hennessey, hennessey venom gt, HennesseyVenomGt, CTS-V, zr 1

• On the ball: Hennessey already out with SRT700 Dodge Challenger upgrade

  Filed under: Aftermarket , Tuners , Coupes , Sports/GTs , Dodge Click above for high-res gallery of the 2008 Dodge Challenger SRT8 It's been less than a month since Dodge officially took the wraps off the Challenger SRT8 , and horsepower fanatic John Hennessey already has a performance package available called the SRT700 that will have muscle car fans tingling with excitement. Since there's no replacement for displacement, Hennessey adds extra cubes to the 6.1-liter V8 with a stroker crankshaft, pushing it out to 426ci. For good measure, a 67mm turbocharger system is added as well, complete with an air-to-air intercooler. Forged aluminum pistons, forged steel connecting rods, high-flow cylinder heads, and a 3-inch exhaust system are also added, among other upgrades. The result is a tire-shredding horsepower increase of nearly 75% - 725 bhp @ 5200 rpm and 750 lb-ft @ 4000 rpm. Hennessey claims it's good enough for the Challenger SRT8 to hit 60 mph in 3.5 seconds (with the optional... Posted Mar 18 2008, 07:56 AM by Autoblog Filed under: Tuners, Sports/GTs, Aftermarket, Coupes, Dodge, Challenger, hennessey, HennesseyPerformance, Hennessey Dodge Challenger, HennesseyChallenger, Hennessey Challenger, HennesseyDodgeChallenger, Hennessey Performance