2015 Ram Cummins power increase

Horsepower remains 385.

It's just for bragging rights in the ads. Now they can say "most torque in it's class". :R :)

"The ongoing slugfest of truck brands to claim the most power, torque, payload, etc., has caused some of us to say “stop the madness!” but others to say “bring it on!” When Ford threw down class-leading power and torque figures of 440 hp and 860 lb-ft of torque for the 2015 Power Stroke 6.7L V-8, we figured it was only a matter of time until that figure was trumped. Well, that day has come. Thanks to some engine management calibrations, Ram engineers have coaxed another 15 lb-ft of torque out of the 6.7L Cummins I-6, bringing the torque total to 865 lb-ft. Horsepower remains 385 at 2,800 rpm.

Ram also reiterated the fact that it’s the only truck brand that complies with the SAE J2807 standards across its lineup, including the HD models. In addition to the colossal torque output for the 2015 Cummins, the maximum payload rating for the 2015 Ram 3500 has been increased to 7,390 pounds, as well as an updated combined GCWR of 37,900 pounds.

Ford recently claimed a non-J2807 compliant maximum tow rating for the 2015 F-450, a point alluded to in the Ram release by saying the torque rating on the 2015 models as “edging out even Class-4 pickup competitors.”

Source: Ram Trucks

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F450...your turn.... :W

What is the HP?

Should have waited another 2 months for the extra 15 lb/ft, sh%t! It's going to be tough to sleep at night knowing all that extra power I missed.

If you read this series of 4 articles about Chevron oil development along with the changes in emission controls on diesel truck engines, you can get a grip on how advanced the modern engines are over their 1980 cousins.

The new engines have about 5% of the pollution of a typical 1980 engine. So little exhaust soot, that the tailpipes might start to rust on the inside!

The injection pressures in the 60's and 70's was around 3,500 PSI, and timing took a while to inject the proper amount of fuel per injection. Todays fuel injectors have 35,000 PSI and can shorten the time it takes to inject the fuel, or even give a pre-squirt then full fuel squirt on each top dead center of the engine.

http://www.delolubematters.com/2014/06/04/the-history-of-diesel-engine-design-part-1/?utm_medium=cpcsyn&utm_campaign=Taboola&utm_source=Taboola&utm_term=novalue You can click on the author's name, and then click on any of the related articles.

Fred.

Fuel pumps the way they are it just does not take much to develop more power. Shoot, just adjusting one screw on the back of the old in-line straight six Bosch pumps on John Deere tractors back in the 1970's could give over 100 horse difference.