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Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

Camaro-based Trans Am SE Bandit Edition borrows Burt Reynolds

For some reason, modifying modern Chevrolet Camaros into the lurching, reincarnated shells of the Pontiac brand is still a thing. If you're the perverse sort that likes this kind of thing, you should check out the latest product from the Trans Am Depot, which comes complete with an endorsement from the star of Smokey and the Bandit, Burt Reynolds. Yes, the new Trans Am SE Bandit Edition has been signed and endorsed by the man himself, but what's important here is not the signature on the dash, it's the bits of Camaro that have been modified. Aesthetically, that means a Bandit-and-Frog-approved set of T-tops, a front-opening hood with a very large, prominent shaker scoop, an equally large and prominent screaming chicken, and Trans Am-inspired front and rear fascias. And naturally, Burt Reynolds' signature adorns the dash. There are plenty of reminders in the cabin about this car's Hollywood inspiration, too. Bandit decals can be found on the front headrests and center console lid, there are chicken wings on the Camaro-spec plastic door inserts, and the black-and-tan color scheme matches nicely with the exterior look. And power? Well, Sheriff Buford T. Justice would have a lot more trouble keeping up with this Trans Am than he did with the original. The 7.4-liter LSX V8 has been paired with a 2.9-liter supercharger which is good for 840 horsepower. It's fast and loud, and even if you can't get behind the look (we can't), at least this Camaro-in-Trans Am's clothing can impress with its performance. The Bandit Edition is limited to just 77 units with prices starting around $115,000. You can check out the official video from Trans Am Depot, which comes with a decent helping of Burt Reynolds, up top. Related Video:

General Motors Recalls Nearly 780,000 Cars To Fix Deadly Problem

General Motors is recalling nearly 780,000 compact cars in North America because the engines can shut down unexpectedly and cause crashes. The company says six people have been killed in crashes related to the problem. The recall affects Chevrolet Cobalts and Pontiac G5s from the 2005 through 2007 model years. U.S. safety regulators say the weight of the key ring and rough roads can move the ignition switch out of the run position, cutting the engine and electricity. If that happens, air bags may not work. GM says there have been 22 crashes from the problem. All happened at high speeds. Dealers will replace the ignition switch for free. GM says owners should remove nonessential items from key rings until the problem is fixed. Related Gallery Chevy Impala Earns Highest Accolades From Consumer Reports Recalls Chevrolet GM Pontiac Cobalt