It continued to serve as GM's primary performance engine until 2014, when its successor, the LT1, debuted in the C7 Corvette.

Richard Holdener Holdener took a stock, flat-top 5.3-liter LS and put it on an engine dyno to find a baseline power rating. The results were as predicted: 342 peak horsepower and 379 lb-ft of torque.

For the ZZ6, Chevy is working to improve the Small Block's high-rpm performance. To make that happen, the engine has Fast Burn aluminum cylinder heads and an updated valvetrain inspired by the LS ...