Ram Unveils Updated 2025 HD Trucks and New Cummins Engine

Author: Daniel-RufiangePublished: 1/1/0001

• Ram unveils its lineup of updated 2025 HD trucks.

Ram today announced important news for HD pickup buyers: the arrival of a new high-performance diesel engine for 2025.

The 2025 versions of the 2500 and 3500 series also benefit from multiple enhancements, similar to what it announced for the regular 2025 variants earlier in 2024.

Powertrains of the 2025 Ram HD Trucks

The new engine is an improved version of the 6.7L turbocharged in-line 6-cylinder engine, which of course runs on diesel fuel. In addition to a host of technical adjustments (redesigned block, larger turbo, stronger pistons, more efficient intake manifold, etc.), the main difference is that the block is now mated to an 8-speed auto transmission, which changes the game when it comes to towing capacity.

The 2025 Ram HD truck pulling a trailer | Auto123.com

It's not the maximum towing capability of 36,610 lb that's so important, but the fact that it's possible to tow the maximum load with an axle ratio of 3.42, rather than the 4.10 ratio previously required. This will mean additional fuel savings at high unladen speeds, with a lower axle ratio.