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Junkyard Gem: 1981 Cadillac Eldorado with V8-6-4 engine

Skyrocketing fuel prices caused by geopolitical events in 1973 and 1979 led to gas lines, federal fuel economy requirements, and an increasing reluctance on the part of American car shoppers to buy big, thirsty Detroit luxury machines. General Motors had pulled off some amazing technological feats in the past — the small-block Chevrolet V8 engine and Hydramatic transmission being two extraordinarily successful ones — and so Cadillac's bosses figured that a combination of computer wizardry and clever mechanical engineering would give the 368-cubic-inch Cadillac V8 a cylinder-deactivation system and resulting superior fuel economy. Here's a very rare example of one of those 1981 Cadillacs, found in a California self-service wrecking yard. The idea behind the V8-6-4 was that computer-controlled solenoids would physically disengage the rocker arms for one or two cylinders on each engine bank under low-load conditions, converting the engine from a 368-cube V8 to a 276ci V6 or 184ci V4 (that's 6.0, 4.5 or 3.0 liters, respectively, for the metric-system aficionados among us). This sort of variable-displacement magic is commonplace today, but it was science-fiction stuff in 1981. An "MPG Sentinel" display on the dash would let the driver know how many cylinders were active at the moment, and the car would get Chevy Citation fuel economy with Cadillac luxury. The V8-6-4 was the standard engine in all 1981 Cadillacs (except for the Seville, which had the troubled Oldsmobile diesel engine as the base powerplant and the V8-6-4 as an option). Unfortunately, the V8-6-4 worked about as well as the Oldsmobile diesel: very poorly. Within a few years, most owners of these engines had disconnected the rocker-deactivation solenoids and just drove their cars as regular full-time V8s. This one has the snazzy "Cabriolet Roof Treatment" option, which boasted "textured elk grain" vinyl and could be had in one of 17 available colors. Front-wheel drive gave the early-1980s Eldorado plenty of interior space, despite its more proletarian Olds Toronado origins, and these velour-covered seats made for very comfortable road trips. The price tag started at $17,550, or about $51,650 in 2019 dollars. The 1981 Imperial went for $18,311, and that car was based on the same platform as the lowly Plymouth Volare. Meanwhile, A BMW 733i cost $28,945 and a new Toyota Cressida a mere $11,599. The 1981 Cadillacs were just a little too much ahead of their time, it turned out.

2020 Cadillac CT4-V, CT5-V revealed, less powerful than predecessors

Expectations have reached stratospheric heights for the 2020 Cadillac CT4-V and 2020 Cadillac CT5-V, and for good reason: Their ATS-V and CTS-V predecessors were potent sports sedans with gobs of power and handling and braking to match. Now the new sedans have been revealed, and they're not what we expected. They each lose two cylinders compared with the other vehicles, and on paper, they don't look as capable. But we do have hope that these won't be the end-all, be-all performance Cadillacs. First, let's look at the cars. The CT4-V will be the base of the V brand, and it's our first look at the small luxury sedan. It has a roofline and window treatment more like past Cadillacs, eschewing the C-pillar garnish of the CT5. It also naturally gets dark trim and headlights, a unique spoiler and quad tailpipes to distinguish it as a V. Under the hood is a turbocharged 2.7-liter four-cylinder that is based on the engine in the new Chevy Silverado. It makes 320 horsepower and 369 pound-feet of torque, a far cry from the ATS-V's 464 horsepower and 445 pound-feet of torque. Cadillac CT4-V View 12 Photos Power goes through a 10-speed automatic transmission only. Both rear-wheel drive and all-wheel drive are available. It gets a mechanical limited-slip differential whereas the ATS-V had an electronically controlled limited-slip differential a la Camaro ZL1. The brakes have four-piston calipers at each corner versus six-piston front units and four-piston rear units on the ATS-V, and the rotors are smaller. Magnetic Ride Control remains standard on the rear-drive version, but the all-wheel-driver version sticks with conventional shocks. The new CT4-V is about 200 pounds lighter than the ATS-V, though, and it has 50/50 weight distribution. Additionally, both the CT4-V and the CT5-V have Super Cruise available as an option. Moving on to the CT5-V, it looks like a regular CT5 but with dark trim and lights, quad tailpipes and a unique rear diffuser. Instead of the CTS-V's 640-horsepower supercharged V8, the CT5-V uses a twin-turbo 3.0-liter V6 making 355 horsepower and 400 pound-feet of torque. Changes made to the 3.0 for the CT5-V include a new intake system and new exhaust, and it revs higher too. Like the CT4-V, it comes with a 10-speed automatic and either rear-wheel drive or all-wheel drive. It does get the electronically controlled limited-slip differential.

GM's Cruise Origin EV platform to be shared by many electric vehicles

GM on Monday announced that it was spending $2.2 billion at its Detroit-Hamtramck facility, part of its $3 billion commitment made after the UAW strike to transform Hamtramck into the company's first plant to exclusively build a wide variety of electric and autonomous vehicles. The operation will eventually employ 2,225 people. Hamtramck is still building the Cadillac CT6 and Chevy Impala. Production of those cars will wind down Feb. 28, when GM will idle the lines for 18 months of retooling. During the transition, more than 800 workers will likely be transferred to build pickups at Fort Wayne, Indiana, or Flint, Michigan. When Hamtramck production of new EVs begins in late 2021, the Cruise Origin electric shuttle revealed last week will be among the first vehicles built there. Also, an electric pickup likely branded as a Hummer to be sold as a GMC, which will be debuted by LeBron James during the Super Bowl this Sunday. GM made quite a few pronouncements during the unveiling of the electric, autonomous Cruise Origin last week in San Francisco. We heard that the Origin was designed to last for for 1 million miles, be "roughly half the cost of what a conventional electric SUV costs today,” and riders could save as much as $5,000 per year by giving up their cars for Origins. Much was left out, as well, such as detailed specs on the platform, and when the Origin could see wide deployment. Carscoops addressed one open question about the platform, reporting that the Origin's bones will be shared among a number of other GM battery-electric vehicles, probably starting with the Cadillac EV due in 2021. The site received confirmation of that tidbit from Megan Soule, the automaker's assistant manager of Electrification, Battery Technology, Fuel Cells, R&D and GM Ventures Communications. It seems what we've been shown in the Origin is the first fruit of the multi-vehicle EV strategy GM CEO Marry Barra presented at the 2017 Barclays Global Automotive Conference. One of the slides (below, full PDF presentation here) touts an "All new multi-brand, multi-segment platform" with a "Structurally integrated all new battery system." The next slide places that modular platform at the center of 11 new vehicles, the van-looking silhouette on the upper right labeled "SAV," for shared autonomous vehicle, apparently in reference to the Origin.