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ShinerBock's avatar
ShinerBock
Explorer
Jan 28, 2019

Inside the 1,000 lb-ft 6.7L Cummins

As I said before, most of the changes were made to keep it clean(emissions wise) and cool at stock power levels while mated to emissions equipment. Although, there is no doubt Cummins is sandbagging for future power increases as stated in the article. I would not be surprised if the power levels increased in a few years with just a "computer adjustment" to keep up with competition.

I can't wait to see what kind of power can be had with aftermarket tuning with the new turbo since the current gen 6.7L is held back at @ 525 rwhp due to the turbo running out of breath. You also don't want to push it more than that on stock head bolts. The rest of the current 6.7L engine can easily handle hundreds more hp.

INSIDE THE 1,000 LB-FT 6.7L CUMMINS

49 Replies

  • rhagfo's avatar
    rhagfo
    Explorer III
    Well this answers the Injection Pump question!

    Injection Pump: Bosch CP4.2 high-pressure fuel pump (29,000 psi)

    I will assume that Cummins is satisfied that past issues have been corrected.
  • js218 wrote:
    So if you don't own a Ram you shouldn't read Ram posts.


    Trying to understand your meaning here.
  • So if you don't own a Ram you shouldn't read Ram posts.
  • Whats the over/under on when Fishie comes to a RAM/CUMMINS thread to troll...?
  • I remember the days before dodge ram got into the diesel
    market. the 360 and 440 cid motors would snap the U joints like nothing. you couldn't step on it with stock u joints you would be dead in the water
  • Dodge or Ram for years have held the Cummins power levels down due to limitations of the rest of the drive train. Heck 30 years ago you could buy direct from Cummins the parts to nearly double the motors power. Now that they have the rest of the drive train technology in place Cummins can take the motor to the levels its capable of. Heck, just take a look at commercial applications to know where this is heading.
  • Modernizing the common-rail fuel system, the entire arrangement is still supplied by Bosch, but now the CP4.2 high-pressure fuel pump is used as opposed to the age-old CP3. Though this twin-piston pump is capable of producing 39,000 psi, Cummins and Ram have stated that peak injection pressure will check in around 29,000 psi in this application. Again, and just as is the case with the CGI block, forged-steel rods and larger head bolts, utilization of the CP4.2 allows room for future growth. Whether or not the injectors are of piezo or solenoid style remains to be seen (but we’re leaning toward piezo).


    :R

    What could possibly go wrong?