Upgrading Your 5.9 Cummins Valve Springs for More Power
If you're pushing your truck past the factory limits, you've probably realized that your stock 5.9 cummins valve springs just aren't designed to handle the pressure. It's one of those components that most people ignore until they start seeing the boost gauge climb or decide to toss in a more aggressive camshaft. But honestly, if you're planning on making real power or revving that 12v or 24v higher than the engineers originally intended, upgrading those springs is basically mandatory. ...