Mechanical lifters were once commonplace in internal combustions engines, but they've been mostly replaced by hydraulic lifters, which offer a lot of benefits.

Judge denies motion to sever GM lifter lawsuit, keeping AFM and DFM claims together after four-year delay. Plaintiffs face an uphill battle.

Camshaft technology is continually changing. From new lobe profiles to various forms of lobe placement, each manufacturer takes its own approach to modern performance. While flat-tappet grinds remain ...

In a world without limits, camshaft designers have known for decades what profiles they'd like to grind. But real-world technological limitations-in terms of design feasibility, materials science, and ...

At the very least, tearing down, inspecting, and cleaning hydraulic lifters is good engine hygiene that can contribute to long service life in your classic car. It’s also a great way to inspect the ...

However, these numbers reflect all units sold, and not all of the models listed were equipped with engines susceptible to the GM lifter issue – for example, trucks equipped with the 3.0L I6 LZ0 ...