1986 Gmc Suburban, Original Paint And Interior, Rebuilt Engine, Trans And Rear 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.

GMC's Bronco-slaying SUV will remain a dream, report says

GMC won't help rival Ford in its quest to dethrone the Jeep Wrangler, according to a recent report. The body-on-frame off-roader the firm planned as an alternative to the upcoming Bronco and the fourth-generation Wrangler allegedly fell victim to a top-down restructuring plan implemented recently by parent company General Motors. Citing anonymous inside sources, Muscle Car & Trucks reported the rugged SUV remained part of GMC's long-term product plan until November 2018. It was shaping up to be one of the company's most distinctive models in decades. It should have arrived as a dedicated off-roader developed and sold exclusively by GMC; it wouldn't have had a twin in the Chevrolet portfolio. The problem, according to the report, is that the off-roader (which might have revived the heritage-laced Jimmy nameplate) should have been built on the 32XX platform designed to underpin the next Chevrolet Colorado/GMC Canyon twins. General Motors canceled that project to save money, so the SUV was consigned to the attic before we even spotted prototypes testing on and off the pavement. The updated pickups will instead arrive on an evolution of the frame found under the models currently found in showroom. There's no word on why that architecture can't support a Wrangler-like SUV. GMC never confirmed plans to build an off-roader aimed at the Jeep Wrangler and the upcoming Ford Bronco, so it certainly won't validate reports claiming it has canceled the model. This isn't the first time we've heard about a body-on-frame SUV made by a brand in the General Motors portfolio, though. Hummer was supposed to take the fight directly to Jeep with an off-roader accurately previewed by the 2008 HX concept, but it shut down before it finished developing the model. Rumors of GMC picking up where Hummer left off have come and gone on a shockingly regular basis over the past few years, yet the Wrangler remains in a class of one.

Driving the BMW M2 Competition, Honda Odyssey and Toyota RAV4 Prime | Autoblog Podcast #651

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by West Coast Editor James Riswick. This week, they talk about driving the BMW M2 Competition, Honda Odyssey and Toyota RAV4 Prime. Then they discuss James' experience testing the new Yakima CBX cargo carrier, Autoblog readers' preference for the GMC Hummer EV over the Tesla Cybertruck, and Mercedes-Benz taking a larger stake in Aston Martin. Lastly, they help James' father find a new car in the Spend My Money segment. Autoblog Podcast #651 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving 2020 BMW M2 Competition 2021 Honda Odyssey 2021 Toyota RAV4 Prime Testing the Yakima CBX Cargo Carrier on the Subaru Outback 75% of Autoblog Twitter follower prefer the GMC Hummer EV over the Tesla Cybertruck Mercedes-Benz to boost stake in Aston Martin to 20%, lend it some tech Spend JamesÂ’ fatherÂ’s money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: