"Even though he has decades of experience building race-wining engines at every level, engine builder Keith Dorton of Automotive Specialists says he still works closely with the camshaft manufactures ...

It's been all the talk on internet forums, club meeting hangouts, and in enthusiast garages across the nation—the loss of zinc and other protective "barrier" chemicals in modern oil damaging ...

Upgrading your engine from a flat-tappet valvetrain to roller comes with a lot of advantages—mainly more power and radically reducing the chances of wiping a camshaft lobe—but it also requires a few ...

So far, our LS1 Camshaft Roundup has been exciting and informative, with a slew of ever growing camshafts and go-fast parts finding their way onto an otherwise stock LS1 on the engine dyno at ...

When it comes to modern internal combustion engines, there are two types that dominate the industry: pushrod and overhead camshaft (OHC). While pushrod engines were the stars of the show for many ...

Maybe you're one of those drivers who loves to tinker around under the hood. Perhaps, instead, you feel safer hurrying off to a professional whenever something seems amiss. You don't need to be an ...

Bruce Crower has lived, breathed and built hot engines his whole life. Now he’s working on a cool one—one that harnesses normally-wasted heat energy by creating steam inside the combustion chamber, ...

Despite declining sales and revenue in 2025, Harley-Davidson has been the dominant American motorcycle maker for most of its long and illustrious history. Harley has produced a succession of engines ...