Jack Baruth at Road & Track has taken a deep dive into Motus’ small block LS-based V4 engine and the possibilities of such a powertrain—and boy, are the possibilities endless. For the uninitiated, ...

Let’s talk about how bore and stroke affect air quantity and velocity. If we look at two engines running at the same rpm, the one with a longer stroke (undersquare) has its piston flying up and down ...

Back in the V-10 days of Formula 1, it wasn't uncommon to see an engine rev to nearly 20,000 rpm—a number you'd never see on a road car. It was only possible thanks to the engine's extremely short ...