2004 Slt Ram2500 4x4 5.9l Cummins Diesel Tx-one-owner Only 74k Miles L@@k!!! on 2040-cars

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Before Jay Leno, this 1970 Dodge Charger was a SEMA star

When Jay Leno drives an awesome car, enthusiasts take note, and this week the internet blew up over the 1970 Dodge Charger resto-mod that starred in a recent Garage episode. But you might not remember: this strapping Charger, called "Tantrum," was one of the highlights of the SEMA Show in Las Vegas last fall. Here's another look at a true Mopar monster. The power: Yep, Tantrum has 1,650 horsepower. That's more than two Hellcats worth of power under the hood. It's a twin-turbo 9.0-liter Mercury Racing engine with a quad-cam four-valve setup. Basically, it's a V8 boat motor developed for cars. Mercury Marine is the crew that developed the V8 for the 1990s Chevy Corvette ZR-1. That all-aluminum LT-5 under the hood cranked out 405 hp – an astronomical figure for the time – and helped make the ZR-1 an icon. Take a listen to Tantrum's 9.0-liter Mercury mill below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Who's behind all of this? SpeedKore, a Wisconsin-based performance shop that does one-off pro touring builds. It specializes in remaking Detroit muscle with modern features like carbon fiber, bespoke interiors, and powerful engines. SpeedKore is pretty good at it. Before it threw a Tantrum, it did the "Cudinator" used in some of the Fast and the Furious movies. You might not know: Tantrum won the Best Domestic category of the GT Awards at SEMA – chosen by your author. The sinister looks were the hook, and the crazy engine solidified its performance cred. Related Video: Image Credit: SpeedKore Design/Style Dodge Coupe Performance Videos Jay Lenos Garage 1970 dodge charger resto mod

Dodge Challenger Shakedown: '71 body, new guts

While Jeep has created a number of vintage-bodied custom vehicles with modern components, this year's SEMA show plays host to Dodge's take on the idea. The Shakedown concept began life as a 1971 Challenger and ditched almost everything in it, including the engine and chassis. What's left is a modern car with a retro look. The chassis was a particularly complicated part of the job, since the Challenger was originally a unibody car. However, Dodge chose to separate the Challenger's iconic body from its structural parts, and moved it onto a custom, one-off chassis from which the body can be removed as needed. The chassis also carries lowered suspension, Challenger Hellcat brakes, and a 6.4-liter 392 Hemi V8 connected to a six-speed manual transmission from the Viper. Dodge also installed the engine using the new Hemi engine swap kit from Mopar. With the shaker cold-air intake and custom exhaust, the Shakedown's powerplant makes 485 horsepower. View 13 Photos The body itself received plenty of tweaking as well. Dodge shaved off the drip rails, door handles, and turn signals for a cleaner look, and also fitted the grille, headlights, and taillights from a 2017 Challenger. The whole thing is finished in matte black paint with a "vibrating" stripe offset on the left side. The Shakedown also gets 20-inch Slingshot rear wheels and a pair of custom 19-inch versions for the front. On each fender is a bright red "392" decal that uses the same font as the labels on classic Mopars 360 cubic-inch V8s. Inside, the Shakedown gets the same radical upgrade as the chassis. Two Viper seats accompany a Viper steering wheel, and the rear seats are gone altogether. The Viper gearbox is shifted with a Challenger Hellcat gear knob, and carbon-fiber accents and leather adorn the wheel, door panels, instrument panel and center console. Related Video: Image Credit: FCA, Joel Stocksdale SEMA Show Dodge Coupe Concept Cars Performance

Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"