The engines of yesteryear were pretty simple, with tappets clackity-clacking away on cam lobes, opening valves, and making a ruckus while doing it. Mechanical lifters were adequate for valve operation ...

GM is finally fixing the reliability concerns of the Silverado and Sierra engines that have hurt owner confidence.

General Motors's Active Fuel Management (AFM) technology utilizes hydraulic valves, solenoids, and advanced software to shut down half of the cylinders in a V8 or V6 engine to save fuel. The system ...

You can find the 6.4L, or 392, HEMI under the hoods of several models of cars, SUVs, and heavy-duty pickup trucks from Chrysler, Dodge, Jeep, and Ram. The first Gen III 6.4L HEMI variant, introduced ...

General Motors recently announced a wide-ranging safety recall involving the naturally aspirated 6.2L V8 L87 gasoline engine, affecting nearly 600,000 vehicles in the United States. While the recall ...

There are very few sounds sweeter to a gearhead than a small-block spinning past 8,000 rpm. For anyone who appreciates internal-combustion engines and horsepower, a race engine spinning at high rpm is ...

Wrong. There is no longer a need to rationalize living with a poor compromise, thanks to the folks at Rhoads Lifters, Inc. (P.O. Box 830, Taylor, AZ 85939, 602/536-2121), who sell one of the best-kept ...

My 2018 Silverado Z-71 LTZ 6.2 L with 170,000 miles is beginning to have lifter issues in cylinder number 4. I was originally told by the dealer that it was the exhaust manifold gasket. I won several ...