Engine/Transmission (1998.5 - 2002) Shift Points

[WStrong]

My boss just bought a 2002 Cummins HO and he was wondering what the optimum rpm to shift at. He is also wondering what the best exhaust brake would be. Thanks.

 

[CumminsDZL]

Well i can't speak for an HO but on my truck about 2900-3000 is perfect. Any higher and it actually gets slower 0-60 times. I cut off . 7 seconds on my stop watch shifting at 2900 compared to redline. Just my 2 cents.

 

[emarsh]

I have an 02 HO with an edge EZ and shift at 2200, this seems to work out the best now that it is broke in.

 

[Texas Diesel]

http://dodgeram.org/tech/specs/axle/6sp.htm



http://dodgeram.org/tech/specs/axle/5sp_vs_6sp.htm



I've heard that 1600 RPM is the minimum recommended RPM for a loaded ruck.

 

[bboxall]

shifting rpm

My 2001 HO 6 speed with 34,000 miles seems to do best at about 1700-1900. If you shift there, the rpm drop in the engine matches the next gears engagement rpm pretty close. This results in a 'speed matched" shift. This means less clutch wear.



I have noticed that if you run it up to 2200-2300 then it is sometimes stiff going into third. Less than 1600 or 1700 could result in lugging of the engine in the next gear.



Hope this helps!