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Specialty Vehicle Engineering's 750-horsepower GMC Canyon fully revealed

GMC's celebrated Syclone will turn 30 in early 2021, but nothing suggests the company will mark the occasion by releasing a modern interpretation of the pickup. New Jersey-based tuner Specialty Vehicle Engineering (SVE) is taking the matter into its own hands by building a limited number of GMC Canyon trucks with Hellcat-like power. Although the original Syclone received a turbocharged V6, the 2021 model gains a 5.3-liter V8 normally found in bigger vehicles, including the Sierra and Yukon. SVE rebuilt it with forged aluminum pistons, forged steel connecting rods, high-lift valve springs, a custom crankshaft and upgraded fuel injectors among other aftermarket parts. It also added a supercharger to raise the eight's output to 750 horsepower and 600 pound-feet of torque. Power flows to the four wheels via a strengthened 8-speed automatic transmission and a permanent all-wheel-drive system. For context, the first Syclone gave the Chevrolet Corvette a run for its money with a fuel-injected, 4.3-liter V6 turbocharged to 280 horsepower and 360 pound-feet of torque. These numbers were spectacular in the early 1990s since the Sonoma that Syclone was based on shipped with the 105-horse Iron Duke four-cylinder as standard. Even compared with the Sonoma GT that got a naturally aspirated 4.3-liter V6 with 195 horsepower and 260 pound-feet of torque, the Syclone was impressive. SVE installed six-pistons front calipers that clamp 13.6-inch slotted rotors, and it kept the factory brakes out back. It also lowered the suspension by two inches in the front and five inches in the back, upgraded the shocks, and added a heavy-duty rear sway bar. These modifications help drivers make the most of the extra power, but SVE hasn't published performance specifications (like the truck's zero-to-60-mph time) yet. Surprisingly, the eight-cylinder weighs almost the same as the V6 it replaces so the engine swap doesn't affect weight distribution. Visually, the Syclone can't be mistaken for a run-of-the-mill Canyon. It wears a deep front bumper, has cladding over the rocker panels and rides on 20-inch alloys. Edition-specific emblems round out the look, and the list of options includes a body-colored grille as well as a folding tonneau cover. SVE's images show a truck painted black, which was the only color offered on the 1991 model, but it's available in any factory hue. Inside, the modern-day Syclone gains special floor mats and a numbered plaque on the dashboard. Leather is optional.

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!"

2023 GM full-size SUVs get Super Cruise expansion pack first

In August, GM announced it had doubled the size of the network of roads available to its Super Cruise hands-free driving feature. Joining the options list in 2017, Super Cruise had been limited to divided interstate highways in the U.S. and Canada. The expansion opened 200,000 miles of additional divided interstate highway as well as major, undivided highways. Both coasts benefit, but there will be a lot more relaxing motoring on the East Coast especially. North of the border, six of the 10 Canadian provinces add enabled roads. Problem is, no GM vehicles have been able to take advantage of the boon. That changes this month, the automaker saying four of its full-size SUVs in specific trims are first in line to make use of the expansion. The SUVs are: 2023 Chevrolet Tahoe Premier and High Country 2023 Chevrolet Suburban Premier and High Country 2023 Cadillac Escalade, Escalade ESV, and Escalade-V 2023 GMC Yukon Denali Ultimate  The vehicles need to have been built on or after October 3, 2022, a production timeline GM says should put the first examples in customer hands this month. The least expensive way to get into Super Cruise is with the two-wheel drive, $77,625 Chevrolet Tahoe Premier with the 3.0-liter inline-six Duramax diesel and the Advanced Technology Package. Vehicles that use the GM's Vehicle Intelligence Platform electrical architecture and already have Super Cruise will receive an over-the-air update "in the coming months" to access the new roads, at no cost to owners. Since other products like the Cadillac CT4 and CT5, Chevrolet Silverado, and GMC Sierra work with the VIP platform as well, they probably aren't far away from the extra capability and they'll bring a lower financial bar to entry.  Related video: