Plucked from GM's last track-day special, the 2013 Corvette Z06, the Z/28's port-injected LS7 V-8 is fortified with new pistons and titanium connecting rods whose bearing inserts are now spray-coated for improved durability. There's also a cold-air intake, revised exhaust headers, and a repackaged dry-sump oiling system, but there's more hardware that's carry-over than new under the hood. At 505 horsepower and 481 pound-feet of torque, the Z/28's LS7 makes just six pound-feet more than when this engine made its debut eight years ago. READ MORE ››
from Car and Driver Blog http://ift.tt/nSHy27
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