1946 Chevy 3/4 Ton Pickup on 2040-cars

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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.

MotorWeek looks back at 1995 Chevy Tahoe, GMC Yukon

MotorWeek's Retro Review series gives us a nostalgic look back at some of the best sports cars and luxury sedans available in the 1980s and '90s. For its latest clip, the show shifts gears to remember the 1995 Chevrolet Tahoe and GMC Yukon. Similar to the success of crossovers today, SUVs were tallying big sales and making big money for automakers in the mid-'90s. The Tahoe and Yukon filled slots in the market as steps down from the larger Suburban. These twins weren't wanting for space, though, with plenty of room to haul around a family. MotorWeek came away generally impressed too, and called the models some "of the better riding sport utilities we've ever experienced." This review comes with some jazzy, electric guitar licks to enjoy in the background.

How a Texas Hyundai dealer became the Chevy SSR king

The SSR isn't one of the most appreciated vehicles in Chevy's long history. With a style amalgamating the look of a vintage hotrod, convertible and a pickup, it's really serving a niche market right from the start. However, a Hyundai dealer in Texas has turned selling the cult models into a booming business and has become the de facto king of the quirky truck. According to Automotive News, Paul Peebles runs North Freeway Hyundai in Spring, TX, but he's better known in the Chevy SSR community the premiere seller of the weird model through his used car network. The odd venture started in 2010 when Peebles wanted to boost his pre-owned business and bought several sporty vehicles. Among them were five SSRs, and he threw a cookout for owners to get the word out. Things just ballooned from there. Since then, Peebles' used car dealer has had a hand in 447 SSR transactions, and some of those are the same truck coming back to sell again. With just over 24,000 of them out there, that works about to two percent of the model's production moving through just one business. The dealership also sponsors an SSR owners' forum online. Being a major broker for a niche model also means that Peebles often gets rare examples of the SSR, including some of the Indianapolis 500 pace car versions, according to Automotive News. We even saw a bizarre one last year when the business put this shark-inspired truck on eBay Motors. The whole thing also works out well for Peebles' Hyundai business. Specializing in SSRs brings other performance models in as trade-ins, and they can draw folks to the lot to check out the collection. Then, maybe visitors can take a look at a Sonata, too.