The 2023 Chevrolet Corvette Z06 options probably the most highly effective naturally-aspirated V-8 ever put in a manufacturing automobile. This video from Chevy explains how engineers completed that.
A naturally-aspirated engine offers a purer driving expertise, and aligns the Z06 street automobile extra carefully with the Corvette C8.R race automobile. However the brand new engine, codenamed LT6, additionally needed to make extra horsepower than the C7 Corvette Z06’s 6.2-liter V-8 regardless of much less displacement and the dearth of that engine’s supercharger. The answer was a freer-breathing, higher-revving engine.
2023 Chevrolet Corvette Z06
The LT6 options twin overhead camshafts and a flat-plane crankshaft. We have seen the latter in varied Ferrari engines and the Voodoo V-8 used within the final Ford Shelby GT350 Mustang, however by no means in a Corvette. Due to smaller, lighter rotating components, this design has much less inertia than a conventional cross-plane crankshaft, which permits the engine to rev extra simply. It additionally seems like no different Common Motors V-8, with a high-pitched wail that is extra supercar than sports activities automobile.
The flat-plane crank permits the LT6 to rev to eight,600 rpm, and was additionally designed to work with tuning valves within the consumption manifold that optimize the quantity of air flowing in. The consumption system additionally exploits a phenomenon referred to as Helmholtz resonance to extend volumetric effectivity and broaden the torque curve.
The result’s 670 hp and 460 lb-ft of torque. That exceeds the horsepower output of the C7 Z06 by 20 hp, however the C8 Z06 cannot match the C7’s prodigious 650 lb-ft of torque. Nonetheless, the brand new automobile ought to be fairly fast (we’re anticipating 0-60 mph in lower than 3.0 seconds) and, with its rev-happy engine, extra participating to drive.
We’ll discover out for certain later this yr. Z06 manufacturing is scheduled to begin later this summer season on the similar Bowling Inexperienced, Kentucky, manufacturing unit that builds different Corvette variants. The LT6 engine will likely be constructed on the Efficiency Construct Middle positioned on the similar website. The 2023 Z06 will likely be provided as each a coupe and convertible, the latter providing an awesome alternative to listen to the LT6’s attribute wail.
