The fifth generation small block reintroduces the LT1 moniker – last used on the 1996 Corvette and ’97 Camaro Z28 – with a host of advanced technologies that Chevrolet says will make it the most fuel-efficient Corvette ever. Preliminary estimates tag the new LT1 with 450 horsepower and 450 lb.-ft. of torque.

General Motors is boasting that the new Gen IV LT1 engine has an "all-new combustion system," but just how really new or innovative is it? EngineLabs takes a deep dive into the cylinders to talk with the engineers responsible for the claim.