The 6.7 Cummins and 6.6 Duramax diesel engines are both reliable and solid, but they do differ in some ways. Here's the ...
with the 2006 LBZ V8 Duramax being a particularly high point for the engine series in terms of reliability, as it received ...
This, combined with the high-pressure common-rail fuel system, allowed the LBZ to deliver more power than previous Duramax ...