The General Motors LT1 engines might be long-running, but the mills it has adorned are quite different. So which LT1 is which ...

General Motors has spent decades refining overhead-valve V8s while much of the industry pivoted to dual overhead cam designs, turbocharging, and downsized blocks. I set out to understand why Chevrolet ...

Hydraulic roller cams have plenty going for them, including power, reliability, and reduced friction. Heck, even the OEMs have embraced the benefits of hydraulic roller cams. Often thought of as the ...

General Motors and heavy-duty trucks go a long way back. For the time being, the Chevrolet Silverado HD and its GMC-branded twin do the heavy lifting for the Detroit-based automaker. The Silverado HD ...

Ford's big block engines are among the best-known and most respected V8s in American history. From the pure-blooded racing heritage of the 427 and its derivatives to the massive torque-happy 429 in ...