Beefing up your Duramax with an lb7 s400 kit
Considering about swapping that restrictive factory charger for an lb7 s400 kit is definitely usually the first big step toward producing real power with your old-school Duramax. If you've invested any time from all within the diesel forums or browsing social media groups, you've probably realized that the LB7 masses has a little bit of a love affair with the BorgWarner S400 frame. There's a good reason for that. Whilst the stock IHI turbocharger that arrived on the 2001-2004 trucks was decent for its time, it really starts to struggle as soon as you ask it to accomplish something beyond basic commuting or light dragging. ...