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Junkyard Gem: 1973 Cadillac Eldorado

The 1971-1978 Cadillac Eldorado was a gloriously ridiculous personal luxury coupe, packing a monstrous 500-cubic-inch V8 (that's 8.2 liters for you freedom-hating metric types) under its acre-sized hood for the first five years of production. Fuel economy was comfortably into single-digit territory, which meant you had to be a real high roller to be able to feed a new Eldo after OPEC turned off the oil spigot. I found this '73 in a Denver wrecking yard earlier this spring. View 18 Photos This car appears to have been sold new in Denver, and the extensive bodywork and sanded areas indicate that it was someone's project car prior to coming to the end of the line. The front-wheel-drive system used in the Cadillac Eldorados and Oldsmobile Toronados of this era was known as the Unified Powerplant Package, and it used a longitudinally-mounted engine feeding a chain-drive setup that proved to be amazingly sturdy and reliable. So sturdy, in fact, that it was used in gigantic front-wheel-drive GMC motorhomes. Everyone agrees that these cars are cool, but few are willing to rescue a rough example and take on the difficult and expensive job of a full restoration. This one isn't rusty, but that wasn't enough to save it. Related Video:

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging

2020 Cadillac XT6 Sport First Drive Review | An unexpectedly strong performer

Cadillac is in an unenviable position right now. Over the past few years, it developed some excellent driving sedans just in time for the world to demand nothing but crossovers. Now it’s working fast to get more crossovers on the market besides the XT5. Its latest is the 2020 Cadillac XT6, a large three-row luxury crossover designed to slide under the enormous Escalade and provide less truck-like driving characteristics. And while it has an underwhelming wrapper, itÂ’s actually a refined, capable and spacious luxury crossover. Still, it must be emphasized that the Cadillac XT6 does not make a strong first impression. The Escalade is brash, bold and above all, big. That's exactly what's been historically expected from Cadillac, but the XT6 just looks like any three-row crossover with some creased lights and lines that help make it look like a Cadillac. ItÂ’s not ugly, but it's not memorable, either. The interior is a mixed bag. The materials are impressive, with interior panels covered in leather and suede in a loaded Premium Luxury version we drove (we haven't had a chance to see a base version). The other trim level, the Sport, gets real carbon fiber trim thatÂ’s made more interesting with copper wires woven into the material for a metallic glint. ThereÂ’s real metal trim throughout, too, from the shift paddles to the nicely weighted infotainment and volume knobs. Unfortunately, the actual dash design looks uninspired and even a little cheap. This is something that weÂ’ve noticed on many GM vehicles, and what seems to be the culprit is that every panel is oddly chunky and blunt. There are no crisp or sharp edges, no thin details, no "wow" moments. The seats arenÂ’t particularly impressive either, as theyÂ’re flat and not very supportive. More lumbar and bolstering would help. The interior is at least spacious, with loads of head, leg and shoulder room in the first two rows. The third-row seat is even usable by adults, at least for short trips since head- and legroom are tight and the seat itself is low. It's similar to what you'd find in the more expensive BMW X7, but less than a Buick Enclave or most non-luxury three-row crossovers. Access to the third row is quite good thanks to the far-sliding second row, and it folds away into the cargo floor at the push of a button at either rear door. There are also USB outlets for every seating position, another thoughtful touch. Once the Cadillac XT6 is on the road, it has some impressive aspects.