Any gearhead worth his or her salt knows that whether it's a SOHC, DOHC, or OHV engine, the camshaft is considered the brain of a four-cycle internal combustion power plant. The camshaft's profile ...

Can roller rocker arms actually help add horsepower? The mechanically savvy will likely consider that question and say: “If you have more lift, and open the valves more, then you’ll make more power.

Depending on your budget, finding an affordable upgrade for your mill can be challenging and even a bit disappointing. That's not to say we all don't want to tear a motor down and start from scratch ...

Q.When I rebuilt a 350 Chevy V-8 to replace the six-cylinder in my 1955 Chevy 210 I decided to use roller rocker arms. We ground the valves, added a mild cam with hydraulic lifters, screwed in studs, ...

The debate over the optimum rocker arm ratio to use has dragged on probably since the invention of the pushrod V-8. Even though Chevrolet made the decision easy for us when it engineered the original ...