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In the middle of 2007 Cummins launched the 24 valve 6.7L diesel engine. It was rated at 350 horsepower and 650 lb-ft of torque with the automatic transmission and a derated (purposely decreased in power) 610 lb-ft of torque for the manual transmission. The 2007 6.7L Cummins was the first truck that came with a manual transmission to be derated Usually, that was done to just trucks with automatic transmissions. +Read more
Also, in 2007, the body style was changed on the Ram trucks. They had sharper lines and a more refined shape.
The 6.7 Cummins was equipped with a diesel particulate filter system. This considerably reduced fuel economy as well as reliability. The early 6.7 Cummins engines were plagued with clogging DPFs. The DPF can be removed (deleted) with aftermarket upgrades BUT that would make the truck illegal if driven on the street.
The standard transmission for the 2007 to 2012 Ram trucks was the 68RFE 6 speed automatic. It was much more advanced than the 48RE. It excelled in reliability, longevity and performance. You could also get one with the G56 manual transmission but these were rarer due to the decreased (derated) output.
If you ever wondered when Dodge Ram became Ram Trucks (or just Ram) it was in 2010.
In February of 2011, the 6.7 Cummins torque output was increased in trucks with the automatic transmission to 800 lb-ft. However, the horsepower stayed the same.
