Giving a beating, internal-combustion heart to countless vehicles is none other than the famous – or, depending on whom you ask, infamous – Iron Duke four-cylinder. Known as the Tech IV later in its ...

However, it was clear this flawed engine design was not going to do the heavy lifting for GM going forward. The oil crisis had sparked critical GM vehicle downsizing programs, such as the compact ...

The result of this cut-and-paste engineering was a 2.5-liter pushrod straight-four engine that ran rough and sounded unpleasant but held together pretty well. Production of the Iron Duke ran from 1977 ...

The 2024 KTM 390 Duke launch is expected in a few months After numerous spy shots, KTM has unveiled the new 390 Duke and every little detail is interesting. For starters, it gets a new design, a ...