In a world where automatic transmissions dominate the diesel truck industry, manual transmissions have become increasingly rare. However, there’s a segment of truck enthusiasts, particularly RAM truck owners, who still swear by a manual transmission—and for good reason.
For RAM owners, the G56 6-speed transmission was the last of a dying breed. Offered through the 2018 model year in the Ram 2500 and 3500, the G56 was the last manual transmission offered in a heavy duty diesel pickup truck—ever.
While Ford and GM had given up on manuals years prior, RAM kept the G56 alive for as long as they thought they could.
In this article, we’ll explore why the G56 manual transmission is so desirable among RAM truck owners, its benefits, and how it stands out in today’s truck market.
What is the G56 Manual Transmission?
The G56 manual transmission is a six-speed gearbox that was developed by Mercedes-Benz, and deployed in RAM trucks. It was paired with both the 5.9 and 6.7-liter Cummins turbo-diesel engine, offering reliablet performance and a tactile driving experience.
The G56 transmission provides a traditional manual shifting experience, which appeals to drivers who want more engagement with their vehicle.
It features a high torque rating, making it well-suited for heavy-duty applications such as towing and hauling, where control over power delivery is paramount.
Key Reasons the G56 Manual Transmission is So Desirable
1. Enhanced Control and Engagement
One of the main reasons the G56 manual transmission is highly sought after is the level of control it provides the driver. Unlike automatic transmissions, which shift gears on their own, the G56 manual allows the driver to control each gear change. For performance-driven truck owners, this control is invaluable.
When hauling heavy loads or driving in challenging terrain, the ability to manually select gears enables a more responsive and personalized driving experience. For example, when towing up a steep incline or navigating off-road trails, the driver can downshift or upshift precisely when needed, optimizing engine power and performance.
This direct connection between the driver and the truck adds an element of driving satisfaction that is hard to match with an automatic transmission.
2. Durability and Reliability
The G56 transmission is designed with heavy-duty applications in mind, meaning it’s built to handle high torque loads without compromising durability. RAM truck owners who use their vehicles for towing, hauling, or off-roading appreciate the reliability that comes with this manual transmission.
The G56 has proven to withstand the demands of aggressive driving, heavy towing, and hard-working conditions, making it an attractive choice for those who need a transmission that won’t let them down in tough situations.
For those who are looking for a long-lasting, robust drivetrain, the G56 offers peace of mind that the notorious 68RFE automatic, also offered in RAM trucks, simply does not offer from the factory.
While the 68RFEs can be built to be very robust—this is an extremely expensive option. And, if you're not careful, even a $10,000+ aftermarket 68RFE can leave you stranded.
The well-known problems plaguing the 68RFE have only made the G56-equipped RAMs that much more valuable.
3. Better Towing Control
For many RAM truck owners, towing is one of the primary reasons they invest in a heavy-duty truck. When towing large loads, having the ability to control the gear selection can make a significant difference in how the truck performs.
The G56 manual transmission allows the driver to maintain better control over engine speed and torque, providing a more controlled and stable towing experience.
By downshifting manually, the driver can keep the engine within its optimal torque range, preventing unnecessary strain on the truck and ensuring that it has the power needed to haul the load without overworking the engine.
This is especially helpful when pulling heavy trailers up hills or when navigating through stop-and-go traffic with a large payload.
4. Fuel Economy Considerations
While automatics have come a long way in improving fuel efficiency, manual transmissions like the G56 still offer some fuel economy benefits in certain driving conditions.
Because manual transmissions allow the driver to control gear shifts, there’s the potential for more efficient driving, particularly when cruising on highways or in situations where frequent shifting is required.
In the hands of an experienced driver, the G56 can provide fuel economy that’s on par with or even superior to its automatic counterparts, particularly in non-urban driving conditions.
Additionally, the G56’s design includes features that help reduce friction and enhance efficiency, making it a more favorable option for those who are looking to get the most out of each gallon of fuel.
5. The Driving Experience
Driving a RAM truck equipped with the G56 manual transmission is simply more engaging and enjoyable for many truck enthusiasts. There’s something about the tactile experience of shifting gears manually that is deeply satisfying—especially when paired with the roar of a Cummins turbo-diesel engine.
For those who appreciate the mechanical connection to their vehicle, the G56 provides a level of interaction that automatic transmissions simply can’t match.
Additionally, many RAM owners prefer the manual transmission because it provides a sense of mastery over the vehicle. Instead of relying on sensors, electronics, or software to control shifting patterns, the driver is in complete control, which adds a level of pride and satisfaction that automatic transmissions can’t replicate.
The G56 Manual Transmission – A Staple for RAM Truck Enthusiasts
The G56 manual transmission in RAM trucks is more than just a component—it's an experience. Whether it's the enhanced control, reliability, fuel economy, or the simple enjoyment of driving a manual, the G56 remains a highly desirable option for many truck owners.
Its appeal goes beyond practicality; it's about having a deeper connection to the vehicle, mastering its operation, and enjoying every moment behind the wheel.
For those who value simplicity and reliability, the G56 offers a unique opportunity to keep the manual transmission alive in the world of modern trucks. It’s a feature that, despite the dominance of automatic transmissions, will always have a special place in the hearts of RAM enthusiasts.