An experimental race engine that was canceled before it got to race, the Mark IIS "Mystery Motor" remains one of the most fascinating V8s built by Chevy ...

If you’re going to build a big-block then going really big is the best game plan. This Dart-based 582 big-block Chevy mill made over 1,000 hp on pump gas and a healthy dose of boost.

While those big-block competitors have fallen by the wayside, the Chevy 454 soldiered on in ... engine adds rectangular port cast-iron cylinder heads with 118cc combustion chambers to deliver ...

The Mystery Motor showcased significant advancements in design that influenced the Chevy 427 big block ... chamber within the block (not in the cylinder head) and valves that sat at an angle ...