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 ...

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 ...

There are several broad rules of thumb that provide clues to whether increasing rocker-arm ratio will prove to be a performance boon with a given engine, cylinder head, and camshaft combination.