Best lugging engine

[Brock]

(09-28-2016 )Running rough Wrote:  It seems to me the newer commen rail cummins with 2050 torque and @m*m^2 pull a bit better down low, the first generation of isx cm570 were totally gutless and sluggish under 1500 rpm, the low rpm response improved a bit on the 870, the 871 had a electric actuater on the turbo which improved response a bit, they all pulled ok if you kept the rpms above 1400 or so, the 2250 with their smaller turbo are quicker responding, but due to the smaller turbo can not build and serius hp, however with @m*m^2 and 2050 torque I would say the 2250 has almost cat like torque below 1500, just my experience, I may not know what I am talkin about

Being able to pull down low and being able to withstand pulling down low are 2 different things. Cummins has never been able to withstand the abuse in lower rpm because they've never tried to build the engine to do so.

Forman at a Cummins shop put it real clear for me. he said you drive below 1300 and I'll be rebuilding your bottom, bring it above 1800 all the time and I'll be doing your top end. He said throughout the 20 plus years he's been working on solely Cummins, he sees it over and over like clock work.