1964 Chevrolet Impala Ss on 2040-cars

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GM applies for LT5, LTX trademarks... are new small block variants coming?

Recently discovered General Motors trademark applications for LT4, LT5, LT88 and LTX have observers wondering what kind of high-performance offerings could be on their way. A new LT4 would mark a return of the engine designation first used on the Corvette Grand Sport, SLP Pontiac Firehawk and SLP Chevrolet Camaro SS from 1996 and 1997. Supposition at Corvette Forum - which provided advance intel on the C7 like these leaked images - believes a new LT4 could go into the high-performance trim of the next-gen, 2015 Camaro that would be more powerful than the 580-horsepower Camaro ZL1.
Seeing an LT5 again would also be déjà vu - in its former life it was a 5.7-liter V8 for the C4 Corvette ZR-1 from 1990-1994 designed by Lotus, producing from 370 hp to 405 hp. A mix of rumor and hope is that the new LT5 will be a supercharged evolution of the 6.2-liter LT1 (pictured) placed in the new C7 Corvette, and that it will go into the C7 version of the ZR1 pumping out something like 700 hp.
The LTX trademark is, as with that last letter, a complete mystery. If the "X" isn't a generic way to denote the whole LT family, it's wondered if it LTX could refer to a crate motor offering like the LSX.

GM to sink over $900M into 4 plants, mostly for a new V8

FLINT, Mich. — General Motors says it will spend more than $900 million to update four factories, with the bulk going to an engine plant in Flint, Michigan, to build the next-generation V8 for big pickup trucks and SUVs. Factories in Rochester, New York; Defiance, Ohio; and Bay City, Michigan, also will see investments, some to make V8 engine components as well as parts for future electric vehicles, the company said Friday. The investments won't create any new jobs, but they will preserve about 2,400 hourly and salaried positions positions at the four sites, the company said. The investments “provide job security at these plants for years to come,” Gerald Johnson, GM's manufacturing chief, said in a statement. Much of the money, $579 million, will go to Flint Engine Operations for equipment to build the sixth-generation small-block V8 that will go into the next round of big pickup trucks and SUVs. The plant now employs about 700 people who also will keep making their current product, a diesel engine used in light trucks. GM, like other automakers, is facing stricter government fuel economy standards and pollution limits starting in the 2024 model year. New vehicles sold in the U.S. will have to average at least 40 miles per gallon of gasoline in 2026, up from about 28 mpg, under new Biden administration rules that undo a rollback of standards enacted under former President Donald Trump. That means the new V8 will have to get better mileage and pollute less than the current versions. Although GM wouldn't release details on the new engine, Johnson said during a news conference at the Flint plant that it would be more efficient than the current version. GM has a goal of selling only electric passenger vehicles by 2035, but Johnson said that's a dozen years out, a period when many customers will still want gas engines. “We know that has a horizon,” he said. “Between here and there, there are a lot of internal combustion customers that we don't want to lose,” he said. In addition to Flint, GM's engine components plant in Bay City, Michigan, will get $216 million to build camshafts and connecting rods, and to machine engine blocks and heads for the new V8 being built in Flint. The plant now employs about 425. The Defiance, Ohio, foundry will get $55 million to build a variety of block castings for the new V8. Included is $8 million for castings to support future electric vehicles, the company said. The plant has about 530 employees.

The biggest gas-guzzlers of 2024: 'The Meanest List' is the opposite of greenest cars

In some circles — especially some automotive circles — bigger is better. This explains the Hummer, for example. In its so-called “Meanest List” of a dozen models, the American Council for an Energy-Efficient Economy (ACEEE) makes no apologies for berating “the worst-performing mass market automobiles” sold in 2024 in the U.S. The most diminutive car on the list is a Chevy Corvette Z06. At the top of this particular heap is the Mercedes-Benz AMG G63, a gas-powered SUV that the environmental agency says was “the worst-performing vehicle of the more than 1,200 models assessed by Greener Cars and has an annual fuel cost over $4,000.” Not to mention its MSRP of around $184,000. Rank Make & Model Powertrain Green Score MSRP Estimated Annual Fuel Cost* 1 Mercedes-Benz AMG G63 Gas 20 $184,000 $4,242 2 Ram 1500 TRX 4x4 Gas 22 $98,335 $3,819 3 Ford F150 Raptor R Gas 24 $79,975 $3,777 4 Cadillac Escalade V Gas 26 $152,295 $3,388 5 Dodge Durango SRT Gas 26 $74,995 $3,332 6 Jeep Wrangler 4dr 4X4 Gas 27 $35,895 $3,260 7 Jeep Grand Wagoneer 4x4 Gas 28 $91,945 $3,058 8 Mercedes-Benz G550 Gas 28 $143,000 $3,186 9 GMC Hummer EV SUV EV 29 $98,845 $1,746 10 GMC Sierra Gas 29 $37,700 $3,069 11 Chevrolet Corvette Z06 Gas 30 $114,395 $3,169 12 Mercedes-Benz Maybach S680 Gas 30 $234,300 $3,031 *ACEEE analysis using EIA data of the annual cost of driving 15,000 miles In terms of numbers, the dirty dozen of the meanest includes seven SUVs and three trucks. Lonely at the middle of the list is the sole electric, the GMC Hummer EV, which weighs in at 9,000 pounds. The council notes that “though EVs have lower emissions than similarly sized gasoline models, the Hummer demonstrates that size and efficiency, not just fuel source, are important factors in a carÂ’s environmental impact.” ItÂ’s also worth reminding prospective buyers that the average fuel cost of a vehicle on the “Greenest List” eats up only a fifth of the fuel cost of a vehicle on the Meanest List, “showing that greener options can also be more affordable.” The ACEEE also put out a "Greener List" of efficient gasoline and hybrid cars that don't require plugging in.  By the Numbers Green Cadillac Chevrolet Dodge Ford GMC Hummer Jeep Maybach Mercedes-Benz RAM Emissions Fuel Efficiency Green Automakers Truck SUV Electric Hybrid