The 2023 Chevrolet Corvette Z06 options essentially the most highly effective naturally-aspirated V-8 ever put in a manufacturing automotive. This video from Chevy explains how engineers completed that.
A naturally-aspirated engine gives a purer driving expertise, and aligns the Z06 highway automotive extra carefully with the Corvette C8.R race automotive. 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 shortage 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. Because of smaller, lighter rotating elements, this design has much less inertia than a standard cross-plane crankshaft, which permits the engine to rev extra simply. It additionally appears like no different Normal Motors V-8, with a high-pitched wail that is extra supercar than sports activities automotive.
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 known 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 automotive must 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 time on the identical Bowling Inexperienced, Kentucky, manufacturing unit that builds different Corvette variants. The LT6 engine can be constructed on the Efficiency Construct Middle situated on the identical web site. The 2023 Z06 can be provided as each a coupe and convertible, the latter providing an important alternative to listen to the LT6’s attribute wail.