The cast-iron engine block may seem like a relic of the past, but that's not so. Dodge and Ram still use it in some of their ...

Cummins has been making engines for trucks, tractors, and more for more than a century. So, after all that time, which models ...

The 5.9 Cummins is said to be one of the most reliable diesel engines, but that doesn't mean it can't benefit from upgrades.