2015 Chevrolet Corvette Z06 Engine Blows During Break-In
With the 2015 Chevrolet Corvette Z06 Coupe being the most powerful stock Chevrolet car ever while also being marketed as the most track capable Corvette of all time, it was only a matter of time before we heard about someone breaking the new LT4 engine that provides 650 horsepower and 650lb-ft of torque. Unfortunately, although the new Z06 has only been reaching owners for a short time, we already have our first announcement of engine problems in a privately owned vehicle. Worse yet, it happened with only 891 miles on the odometer and the engine failed during a stint of gentle break-in driving.
The First Publicly Blown Z06 LT4
Race cars break engines and with the 2015 Chevrolet Corvette Z06 promised to be the most track capable Vette of all time, we could have all imagined that some folks will break the LT4 engine while participating in some high speed racing action. Unfortunately, 2015 Corvette Z06 owner and CorvetteForum.com member Lawdogg149 was recently performing some light break-in work with his new C7 Corvette when the engine began making an awful noise.
According to his posts on CorvetteForum, Lawdogg149 was making a gradual pull from 35 miles per hour, accelerating and shifting short of the redline when the Lt4 engine suddenly began knocking. He pulled the car to the side of the road and popped the hood, at which point he discovered an unpleasant knock coming from the #6 cylinder along with a grinding sound coming from the supercharger housing.
Lawdogg149 wisely got his 2015 Corvette Z06 to the dealership where they confirmed that the engine was toast and the meat of the explanation was that something in the valve train assembly for the #6 cylinder had failed. Unfortunately, General Motors was quick to demand that the dealership send the LT4 engine back to the automaker so that they could tear it down and determine the cause of the engine failure.
Not Likely to Be a Common Z06 Problem
Anytime a big name vehicle like the 2015 Chevrolet Corvette Z06 runs into mechanical issues like a dramatic engine failure, fans of other brands are quick to insist that this is “a problem with the new Z06”. However, at this point, I believe that this is an isolated incident that only affected Lawdogg149’s Corvette and my reasoning in feeling this way comes due to the fact that quite a few new Z06 coupes have been delivered. Now that a fair number of new owners have their Z06 – and some have quickly put the car to work – all without any word of similar drivetrain problems, I find it hard to believe that one engine failure is anything other than an unfortunate fluke for the owner of this car.
Now, should we learn of more examples of 2015 Corvette Z06 LT4 engines failing, this will certainly become yet another black eye for GM, but until more reports of LT4 valve train failures surface, I am chalking this one up to a unique manufacturing or assembly problem.
Fortunately, General Motors is replacing the blown engine free of charge under the normal warranty of the 2015 Z06.