Mustang Mach 1 Mule

’17 Silverado 3500 HD

Some sources seem to think that this is the next Ford Mustang Mach 1 mule. This Mustang 5.0 includes a quad exhaust setup, as seen on the GT350, and with a beefier rear axle, suggesting that this Mustang is packing more than the GT’s 435 hp. A Mach 1 was last offered in ’03 and ’04, where it got a 30hp upgrade over the GT, along with special styling changes that recalled the Mach 1s of the late ’60s and early ’70s.

In keeping with Ford’s product plan for the Mustang, special editions will be rolled out on a yearly basis, sometimes with performance upgrades.

Expect to see more special-edition Mustangs in time for the ’17 model year.

This is the Chevy Silverado HD, featuring the latest Duramax diesel engine. It was caught cold-weather testing in Michigan. GM is expected to give a revamp to the Duramax diesel in the HD Silverado and Sierra trucks.

Reports suggest that the current 6.6L V8 unit will be thoroughly worked over, pushing it comfortably over the 425hp mark and providing at least 860 lb.-ft. of torque. An eight-speed automatic transmission is also likely to become standard fare, but a 10-speed unit may not be far behind.

Expect to see the Silverado and Sierra HD later this year.

Ram HD Truck

’17 Camaro ZL1

Is Ram going to be the next brand that uses the Hellcat engine? Spotted among various Chrysler prototypes is a heavily modified Ram HD with a cobbled-together front end that could hide the supercharged V8 that makes 707 hp in the Charger and Challenger Hellcat musclecars.

A source says that FCA is looking to put the Hellcat motor in everything it fits in, as it’s proven to be a huge boost for sales of the rear-drive cars. It’s already destined for the Grand Cherokee.

This ’17 Chevy Camaro ZL1 was caught while track testing in Milford, Michigan. This version should be able to make the most of its lighter and smaller platform in both coupe and convertible versions.

The Camaro ZL1 is expected to be powered by the supercharged 6.2L V8 from the Corvette Z06 and Cadillac CTS-V, tuned to somewhere near 640 hp—a substantial boost over the old ZL1’s 550 horses. A six-speed manual is expected to be offered, but an automatic could also be available this time.

Expect the ZL1 to be on sale in time for the ’17 model year.