Silverado SS 427
عليها مكينت الكورفت
عليها مكينت الكورفت
The Silverado 427 is powered by GM Powertrain's 7.0-liter LS7, the same Gen IV small-block V-8 that is the center of power in the Corvette Z06 and available as a "crate engine" package from GM Performance Parts. Its cubic-inch displacement is 427. A six-speed manual transmission backs the engine, providing the driver with full control of the vehicle's substantial capability
[COLOR=black]Drivetrain details
Fitting the LS7 engine into the Silverado's engine bay was relatively simple, because it is based on the same Gen IV small-block V-8 family as the Silverado's regular production V-8 engines – and is available as a "crate engine" package from GM Performance Parts. A custom-fabricated air intake system was designed for the Silverado 427, adding not only a necessary air path for the engine but also some underhood distinction.
The LS7 is rated at 505 horsepower and 470 lb.-ft. of torque, and is built with lightweight reciprocating assembly components and other design features that have their roots in the Corvette racing program. In fact, the LS7 uses a racing-style dry sump oiling system that ensures optimal engine oiling during all driving and cornering maneuvers. Engineers had to make room under the Silverado's hood for the LS7's external oil supply tank.
The Silverado 427's LS7 engine is backed by a Tremec heavy-duty six-speed manual transmission, which transfers torque to GM's automatic locking rear axle. It's fitted with 3.73 gears, which multiplies the torque of the LS7 to provide muscle car-challenging acceleration. The six-speed transmission has a steep, 3.01:1 first gear, which contributes to a tremendous performance at launch, while two overdrive gears balance the Silverado 427's performance with fuel economy that first-generation 427 drivers could only dream of.
Complementing the drivetrain is a set of 22 x 10-inch five-spoke aluminum wheels mounted to wide Pirelli Scorpion 305/40ZR22 performance tires, which do their best to maintain adherence to the Tarmac as the LS7's revs climb. The tires are the contact points for a performance-tuned suspension that used Ground Force custom front and rear lowering springs, front struts and rear shocks. The lowered suspension helps the Silverado 427 corner flatter and with more precision, while also giving the vehicle a "just right" performance stance. A set of Baer disc brakes, with six-piston calipers and 16-inch-diameter rotors, provides the stopping force for the vehicle
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