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 ...

Changing the rocker arms in your C5 or C6 Corvette may not deliver the dramatic results that a cam swap can, but it's a lot less work. And the power increases you'll experience make the change a good ...

This pump-gas, 470-inch big-block Mopar we recently started working on was originally built with factory-style, 1.50:1-ratio rocker arms. The 1.50 rocker arms were working just fine, but we decided a ...

The rocker arm is possibly the third most abused part in your engine. The connecting rods take the cake for the most abuse, followed closely by the piston assembly, but we like to think the rocker ...

The rocker arms transfer a displacement from the camshaft to the valves. The camshaft has lobes that contact push rods and move them up and down in a periodic manner. The other end of the push rods ...