To create the 327, Chevy used the same small block design based on the 4.40-inch cylinder spacing as previous SBC engines. However, engineers increased the cylinder bore diameters to 4.00 inches ...

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 ...