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Callaway, Lingenfelter boost Corvette Z06 way beyond 700 hp

With 650 horsepower and just as much torque on tap, few would accuse the latest Corvette Z06 of being down on power. But for those who'll always demand more, two leading Corvette tuners have just announced new tuning packages for the Z06 to boost Chevy's flagship well beyond 700 horsepower. The more powerful of the two comes from Callaway Cars, which has added a larger supercharger, a triple-action intercooler, and more to increase output to a massive 757 horsepower and 777 pound-feet of torque. The result, according to Callaway, is a 0-60 time quoted at 2.8 seconds and a quarter-mile run in 10.5. The package also includes a reshaped hood, all manner of trim upgrades, and a three-year warranty, and will set you back nearly $17k on top of the cost of donor vehicle that currently lists for $79,000. In what could only come second relative to Callaway's kit, Lingenfelter Performance Engineering has also released a Stage 1 package for the Z06. The kit includes a new dry sump damper, upgraded supercharger pulley and drive belt, and more – all of which Lingenfelter says will boost the Vette's output up to 720 hp and 730 lb-ft. Revised performance figures weren't released, but despite the 37-horse, 47 lb-ft deficit, we doubt it'd trail Callaway's by much. But both would likely leave the stock Z06 in their dust, and you can read more about them in the press releases below. Related Video: Callaway Cars Releases Their Most Powerful Corvette - 757 bhp / 777 lb-ft - Z06-based Corvette upgrade boasts 32% larger supercharger, triple intercoolers, and consistent power - lap after lap The Numbers - Callaway Cars today announced power numbers and performance for the flagship model in their performance car lineup. Equipped with Callaway's GenThree Supercharger, the Corvette Z06 now produces 757 bhp @ 6,200 rpm and 777 lb-ft @ 4,500 rpm (SAE). A launch to 60 mph is now achieved in 2.8 seconds, and a quarter-mile in 10.5 seconds at 131 mph. Why Go Big, When You Can Go Bigger? - Size Matters. To reach that power (which is up from 650 bhp / 650 lb-ft) the supercharger itself needed to be bigger since the output of a positive displacement supercharger is proportionate to its size. The Callaway GenThree supercharger is 32% larger in displacement (2300cc vs 1740cc). Cooling - Callaway engineers recognize that a key contributor to maximizing power is reduction of inlet air temperature associated with forced induction.

Regular-cab, short-bed Chevy Silverado Trail Boss pickup looks great

For all the wild popularity of full-size pickups, there's one configuration that U.S. buyers are no longer offered: the regular-cab, short-bed truck. Interestingly, however, GM still does make this configuration, and both the Chevrolet Silverado and the GMC Sierra are offered with it — in the Mexican market. That body style, however, is available solely in ultra-basic work-truck form. But a custom wheel shop, JC Wheels in the Mexican city of Culiacan, has converted one of these Silverados to Trail Boss trim, and we're digging the result. The sporty shorty Silverado Trail Boss comes to our attention via GM Authority, after the shop posted it on their Instagram feed. The shop added a 3-inch lift, assist steps, Chevy alloy wheels, a Trail Boss front fascia including red tow hooks, and Trail Boss badging. They also added dark window tint, which seems like a good idea in sunny Mexico. In the U.S., the Silverado Trail Boss isn't offered at all in regular-cab form; it only can be had as a double cab or a crew cab, the latter with a choice of a short bed or standard bed. But size is often a hindrance for trucks that actually get driven on trails, where this regular-cab, short-bed variant's smaller wheelbase would be an advantage. Beyond that, the Trail Boss upgrades keep this configuration from looking like a basic-spec machine. That's even more true of the same outfit's previous efforts: the conversion of the GMC Sierra regular-cab, short-bed pickup into a Denali. With so many buyers choosing pickups as personal-use vehicles, it's not hard to think that this configuration could find an audience here. But the key would be to do as this Mexican firm has done and offer it in the desirable off-road and luxury trims, rather than as a basic work truck. Would you buy one? Sound off in the comments below. The next step would be to use this configuration as the basis of a full-size, two-door SUV, in the mold of the classic Chevy K5 Blazer and GMC Jimmy.

GM recalls full-size truck, SUVs and vans over faulty shifter mechanism

Twelve different General Motors vehicles from the 2013 model year, up to 54,686 units in total, are being recalled over two potential issues with their steering columns. The models in question, all full-size trucks, SUVs or vans, are the: Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe, and GMC Savana, Sierra, Yukon and Yukon XL.
The affected vehicles were built with a fractured parking lock cable or "a malformed steering column lock actuator gear in the lock module assembly." As a consequence, they could shift out of park without the brake pedal being applied or with the key removed or in the off position.
A bulletin from the National Highway Traffic Safety Administration indicates that the recall should begin on January 17. GM will notify owners, at which time they can take their vehicles to their dealers for repair free of charge. Have a look at the bulletin below for more information.