Table of Contents
If you’re driving a Dodge Ram from the late 90s to early 2000s, you might be familiar with the 47RE transmission. This automatic transmission has a reputation that’s sparked countless debates among truck enthusiasts. Is it a reliable workhorse, or is it a ticking time bomb waiting to fail? Let’s dig into the essential facts about the 47RE transmission to help you understand its strengths, weaknesses, and how to keep it running smoothly.
1. The 47RE Transmission’s Origins: A Modified 727
The 47RE transmission is essentially an evolution of the legendary 727 TorqueFlite, one of the most durable transmissions ever produced by Chrysler. The key difference? The 47RE was designed to handle the increased torque of Dodge’s heavy-duty trucks, particularly those equipped with the Cummins diesel engine. It adds an overdrive gear and electronic controls, making it more sophisticated but also more prone to certain issues if not maintained properly.
2. Stock Performance: Fine for Most, But Not for All
In its stock form, the 47RE transmission performs adequately for most everyday tasks. If you’re using your truck for light towing or as a daily driver, the 47RE can serve you well, especially if you maintain it with regular fluid and filter changes. However, problems arise when truck owners start pushing the limits by adding more power through performance mods.
Adding significant horsepower or torque without upgrading the transmission can lead to premature failure. Many owners who have experienced issues with the 47RE admit to having modified their trucks beyond the transmission’s stock capabilities.
3. Common Problems and Misconceptions
The 47RE transmission often gets a bad rap due to its tendency to fail when overloaded or poorly maintained. However, much of this reputation comes from owners who either added significant power to their trucks or neglected basic maintenance. The most common issues include overheating, slipping, and overdrive failures. These are often preventable with proper care.
For example, the overdrive gear can fail if used improperly during towing. It’s crucial to turn off the overdrive when towing heavy loads to prevent excessive stress on the transmission. Another common issue is overheating, which can be mitigated by ensuring your transmission cooler is in good working order.
4. The Importance of Regular Maintenance
Regular maintenance is key to extending the life of your 47RE transmission. This includes routine fluid and filter changes, band adjustments, and ensuring that the transmission cooler is functioning correctly. Neglecting these basics can lead to overheating, slippage, and eventually, total failure.
One of the biggest maintenance mistakes is failing to adjust the bands. The 47RE relies on band adjustments to maintain proper shift quality and prevent wear. This adjustment is often overlooked but is crucial for keeping the transmission in top condition.
5. Upgrades and Modifications: Making the 47RE Bulletproof
For those looking to push their trucks beyond stock power levels, or simply wanting to ensure the longevity of their 47RE, several upgrades can make a world of difference. Some of the most popular upgrades include:
– Torque Converter: Replacing the stock torque converter with a higher-quality aftermarket unit can significantly improve the durability of the 47RE, especially in high-torque applications.
– Shift Kit: Installing a shift kit can improve shift firmness, reduce slippage, and extend the life of the transmission.
– Billet Input Shaft: A stronger billet input shaft can handle higher power levels and reduce the risk of catastrophic failure.
– 48RE Internals: Upgrading the internals of your 47RE with parts from the more robust 48RE transmission can increase its power-handling capabilities.
These upgrades can be costly, but they’re often cheaper than dealing with repeated rebuilds or replacements.
6. Manual vs. Automatic: The Never-Ending Debate
Some owners swear by manual transmissions, arguing that they’re more reliable and cheaper to maintain in the long run. It’s true that manuals, like the NV4500 or NV5600, tend to be more durable under heavy loads, but they’re not without their own issues. Clutch wear and hydraulic problems can be just as expensive to repair as an automatic rebuild.
For many, the choice between a manual and the 47RE comes down to personal preference and intended use. If you’re towing heavy loads regularly, a manual might be worth the premium. But if you’re using your truck for mixed duties, a properly maintained and upgraded 47RE can be just as reliable.
7. Buying a Used Truck with a 47RE: What to Look For
If you’re in the market for a used Dodge Ram equipped with a 47RE transmission, there are a few things you should check before making a purchase. First, ask about the transmission’s history. Has it been rebuilt? If so, when and by whom? A well-documented rebuild by a reputable shop can be a good sign.
Next, check the transmission fluid. It should be clean and not smell burnt. Any signs of slipping during a test drive are red flags. Also, inquire about regular maintenance, particularly band adjustments and fluid changes.
Finally, consider the overall condition of the truck. A well-maintained truck is more likely to have a well-maintained transmission. Rust, wear, and neglect in other areas might indicate similar treatment of the transmission.
Conclusion: The 47RE Transmission Isn’t All Bad
The 47RE transmission has earned a mixed reputation over the years. While it’s not without its flaws, many of the issues can be attributed to poor maintenance, misuse, or unrealistic expectations. For most drivers, especially those keeping their trucks at stock power levels, the 47RE can be a reliable and long-lasting transmission.
However, if you’re planning on adding significant power or towing heavy loads regularly, consider investing in some key upgrades or even exploring a manual transmission. With proper care and a few smart upgrades, the 47RE can continue to serve you well for many miles to come.
If you’re on the fence about purchasing a truck with a 47RE, remember: a little maintenance and respect go a long way in keeping this transmission running smoothly.
Related Links
Top 10 Reasons Why Investing in a Transmission Cooler is Essential for Your Vehicle
The Ultimate Guide to the 48RE Transmission: 10 Key Insights You Need to Know
7 Vital Things You Must Know About the 46RE Transmission: The Essential Guide
