2024 Chevy 3500 verses 2023 F350

4x4ord wrote:

cummins2014 wrote:

Wow 5000 RPM with a diesel , I'm sure that 6.7 Cummins would have pistons thru the block at that RPM . :B

5000 rpm for a Cummins might be pushing it ... I don't know? I wasn't overly concerned to see that level of rpm for 12 miles with my Duramax.

with the eb engaged the dmax will shut off fuel flow and let the engine rev to near 5,000 if needed. no issue. friction losses go up as the cube of rpm so rpm helps slow you down in this case.

On early dmax the tach had a "redline" at just above 3Krpm, but apparently that caused enough confusion with grade brake operation that by 2015 the tach no longer has a redline.

rpm limit under power is just above 3Krpm.