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2014 Chevrolet Silverado and GMC Sierra debut all-new designs, three new engines

General Motors has finally dropped the curtain on the 2014 Chevrolet Silverado and 2014 GMC Sierra. Both trucks have undergone substantial revisions with updated versions of the company's 4.3-liter V6, 5.3-liter V8 and 6.2-liter V8 engines. In a shot across the bows of both Ford and Chrysler, GM says it won't use a V6 engine adapted from passenger car applications. Instead, it developed the 4.3-liter engine based on its proven truck-duty architecture.
All three mills will boast direct injection fuel systems as well as a new cylinder head design. Combined with a revised piston, the new engines feature a smaller combustion chamber with a compression ratio of 11:1 or higher depending on the application. Cylinder deactivation and continuously variable valve timing are all part of the recipe, and each engine is paired with a six-speed automatic transmission with auto grade breaking. So far, no fuel economy or horsepower figures have been released, though GM says the new engines will best their predecessors in both areas.
Outside, the trucks feature a number of enhancements to reduce drag and wind noise, and GM claims both the Silverado and Sierra will offer buyers some of the quietest cabins in the class. Extended cab models now feature front-hinged rear doors to allow easier access to the back passenger area, and Crew Cab buyers can now select between a five-foot, eight-inch bed or a six-foot, six-inch bed. Buyers with a mind toward going off road will also rejoice in the return of the Z71 package, complete with Rancho shocks, front tow hooks and additional under-body protection.

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.

EarthCruiser adds a bigger camper option to its heavy duty pickup line

EarthCruiser is a camper and expedition vehicle company based out of Oregon that we've previously covered for its huge commercial truck-based machines. But they offer more than that, from drop-in campers for smaller pickups to heavy duty pickup conversions. The company's latest product is one of the latter, offering a larger camping area than the current EXD model. This new camper conversion is called the Terranova. The big differentiator between it and the EXD is the camper section, which extends over the truck cab on the Terranova. This means that bed space can be moved to above the truck cab, instead of having to use a convertible dinette. So less reconfiguring, and generally more usable space. One other major difference is that the EXD is only available for the Ram 3500 and Ford F-350. The Terranova is being designed for both of those trucks as well as the Chevy Silverado 3500. The EarthCruiser Terranova is otherwise very similar to other EarthCruiser models. The camper section is made of fiberglass and plastic, and the pop-up roof is insulated with foam. The curtains are triple-layered. The company says it can house four people. It comes with a freshwater tank and pump to help supply the kitchen sink, drinking water tap, bathroom sink and indoor and outdoor showers. There's also a cassette toilet. The kitchen features an induction stove top and small refrigerator and freezer. A fan system is standard, and air conditioning is optional. Power comes from a 400-aH lithium-ion battery. The Terranova isn't yet available. EarthCruiser is finishing up design and engineering, and it plans to have finished examples early next year. The company is taking reservations now, though. Pricing hasn't been announced, but an EXD runs between $220,000 and $265,000, and we would expect the Terranova to cost even more. Related Video: Featured Gallery EarthCruiser Terranova Expedition Camper renderings Chevrolet Ford RAM Truck Off-Road Vehicles Special and Limited Editions RVs/Campers