2024 Ram 1500 Big Horn/lone Star on 2040-cars

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Here's how I averaged 31.5 mpg in a Ram HFE EcoDiesel

Few things could be more American than a bright red Ram pickup parked in front of Mount Rushmore. To get there and back on a single tank of fuel from the nearest major city, however, requires a collaboration of international proportions. This particular Ram is a 1500 HFE EcoDiesel, festooned with badges indicating the presence of an Italian turbodiesel V6 mated to a German eight-speed automatic. Some Rams are even built in Mexico, but this one only boasted a 27 percent Mexican parts content. A rather global truck, this one. It is the sum of its parts, but those bits and pieces were curated by a team of engineers in Michigan. At the risk of hipstering its history, the Ram HFE (High Fuel Efficiency) package was truly custom-tailored for one purpose: Achieving an EPA-rated 29 mpg on the highway, which is 1 mpg better than a standard Ram 1500 EcoDiesel. It did just that. No, it did better than that, but more on that in a minute. The Ram has stuck with its "son of big rig" styling for nearly 25 years; opting for the EcoDiesel V6 means you can fill up next to Peterbilts. My goal was to bypass truck stops entirely. I left Denver early in the morning and aimed to enjoy lunch with Washington, Jefferson, Roosevelt, and Lincoln looking over my shoulder before heading home for dinner. Mt. Rushmore is about 370 miles away from the northernmost truck stop within Denver, where I filled the Ram HFE's tank and headed northbound on Interstate 25 toward Wyoming and a series of smaller highways that roughly follow an old stagecoach route from Cheyenne to what is now Mt. Rushmore in South Dakota. The Ram was such a fuel miser that I could have driven an extra 50 miles each way and still avoided the pumps. It's beautifully stark country: the kind of desolate place where the FM radio does a lot of seeking; that's all the audio I had on board because the Ram HFE is decidedly lacking in comfort and convenience features. To get to an EPA-estimated 29 mpg highway figure, Ram engineers had to goals: To strip weight and improve aerodynamics. In the wind tunnel, the medium-size 4x2 Quad Cab with 20-inch wheels and the Ram Express trim level's one-piece front bumper proved the most aerodynamic configuration of the many flavors of Ram available. Interestingly, testing revealed that adding full-length tubular side steps and a tri-fold tonneau cover normally offered in the Mopar accessories catalog aid aerodynamics.

Inline-6 Hemi replacement on the cusp of production from Stellantis

It appears that Stellantis is ready to put its long-rumored inline-six into production at its Saltillo, Mexico plant, possibly marking the beginning of the end of Chrysler's long-running 5.7L Hemi V8. But so far, the automaker's American brands have remained mum on where exactly the new turbocharged "Tornado" I6 may land. Stellantis powertrain blog Stellpower (by way of Muscle Cars & Trucks) spotted an entry for a new "GME T6" inline-six engine on the Saltillo facility's web site, suggesting that it was either in production or close to it. That entry has since been removed, but the mystery remains.  We've been hearing tidbits here and there about this new inline engine for years, but this is the first time we've seen anything suggesting its arrival is imminent. Usually, such a significant powertrain update would coincide with the launch of a new product to showcase it. So far, Stellantis has remained mum, even overseas, about where this engine is destined to reside. 2022 model year vehicles are likely off the table entirely.  But while it's common for new engines to debut with new cars and trucks, it's not a universal truth. Ford's Coyote V8 missed the corresponding Mustang refresh by a year, for example, orphaning the 2010 model and its much-needed styling updates with the old 4.6L V8 (and the 3.8L V6, for that matter; the 3.7L Duratec was also late to that party). Even sticking just to Stellantis, the JL Wrangler's powertrains have been a work in progress since it arrived back in 2018. The standard V6 and 2.0-liter turbo-4 debuted at launch; the EcoDiesel, 392 and 4xe all came later.  And 4xe may be the model by which to measure our expectations. Its introduction didn't come completely out of nowhere, but it was rather sudden for what turned out to be such a solid offering. That bodes well for the company's existing Hemi-powered trucks and SUVs. The Ram 1500, Jeep Grand Cherokee and Wagoneer are all strong candidates to receive the new Hemi replacement, as all would greatly benefit from even small improvements in fuel economy. If there's to be a future for the Dodge Charger and Challenger and Chrysler 300, they'd benefit too. And how about a Gladiator with the wick turned up, positioned as its equivalent to the Wrangler 392. Turn that Tornado into a Dust Devil. Don't worry; we've got plenty more where that came from.  Related Video This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Hennessey Mammoth is a Ram 1500 TRX turned three-row SUV

The 2021 Ram 1500 TRX is a thoroughly incredible machine that's great for pounding across dunes and flying over jumps, and you can even bring along some friends and their gear along for the ride. But what if you want to bring more friends along. Well, Hennessey Performance has the solution in the Mammoth SUV. What it is, is a TRX turned into a three-row SUV. It's something that Hennessey has experience with, as nearly a decade ago, it started converting some of its upgraded Ford F-150 Raptors (called VelociRaptors after being tuned) into custom SUVs. Like those Fords, the Mammoth will get a custom roof, rear pillars, glass and unified interior to provide more covered space. The company will also replace the second-row bench with captain's chairs and add a third row with a folding bench seat. While Hennessey could probably simply sell these TRX SUVs just with the body modification, the company will also add additional performance. An upgraded supercharger, pulleys, fuel injectors, engine calibration, intake and high-flow catalytic converters bring output to an absurd 1,012 horsepower and 969 pound-feet of torque. Hennessey claims it will get to 60 mph in 3.2 seconds and through the quarter-mile in 11.4. The company also raises the truck an extra 2.5 inches and fits a custom off-road bumper with LED lights and 20-inch wheels with 35-inch tires. The whole thing will cost $375,000. That's no small amount, but there's a lot of custom work in the vehicle. Plus, it's exclusive, with only 20 units slated to be produced. If it's what you're looking for, the company is taking orders now. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.