Sometimes we all need a little change in our lives. The same could be said for that camshaft that pumps the valves open and closed in your street engine. What was once state of the art is now obsolete ...

The LS1 build takes a major step forward with a camshaft install. In this video, we tear into the front of the engine, line ...

It's common knowledge that most modifications made to an engine involve a tradeoff somewhere in the overall equation. You might want a higher compression ratio, but the trade-off here is a need for ...

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 ...

Over the course of hot rodding, one of the more debatable upgrades has been swapping camshafts--especially in modular engines. Given the Two-Valve's complexity and cost of buying two camshafts, the ...

A British company has developed a digital valvetrain drive system that, it claims, can give petrol engines a diesel-level of efficiency and fuel economy with much lower NOx emissions. The inventors ...

One critical part of the Koenigsegg Gemera's brain-scrambling powertrain is its 'Freevalve' petrol engine. You might have glossed over it while trying to compute the outputs, and they way that engine ...

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 ...

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 ...