Allison Transmission Help4/22/2021
The 68-RFE internals are merely larger versions of those found in the Dodge Caravan transmission that originally debuted in 1989.Please share your email address to receive your time-limited offer.
Whether you are reversing up steep hills, towing at highway speeds, or just looking for increased reliability and power, you will find that the Allison LCT 1000 built by ATS is far superior to the factory transmissions offered by Dodge. Alln Transmission Help Upgrade For YourOur 6 speed Allison Conversion Kit and Allison Transmission Package are a great alternative and upgrade for your transmission. Our Allison Conversion Kit gives you everything you need to run the Allison LCT 1000 behind the Cummins, and our Allison Transmission Packages can handle everything from stock power to well over 1000 horsepower. The labor is pretty intensive so we would definitely recommend either bringing the truck to us in Arvada, Colorado or we can refer you to one of our Certified Installers in your area. We have plenty of options here as well that would put you into a better and more reliable transmission, for a lot less money than upgrading to the unbeatable Allison 1000 transmission. Our upgrades and modifications to the 68-RFE give you the performance you need while being covered by up to a 5-year500,000 mile warranty. Although the 68-RFE will not take the abuse that the Allison LCT 1000 transmission will due to its inherent small clutch packs, gear set, and case design, the ATS built 68-RFE is a fantastic option for normal applications where power doesnt exceed 700HP. Dodge transmission upgraded parts include the hydraulic pump, clutch packs, shafts, and torque converter modifications to strengthen it to reliably handle the massive torque of the Cummins engine. Conversely, the Allison LCT 1000 6-speed automatic transmission comes from the factory with large shafts, clutch packs, and gear sets. This gives the Allison a direct advantage over the 47-RE and 68-RC Dodge transmissions. The 69-RC has similar size clutch packs, shafts and gear sets as the Allison, however, it does not have an ideal gear split so the 69-RC always seems a bit clunky and does not handle increased power levels well. All Dodge and Allison diesel torque converters are about the same in size, and they are all under-designed. This means that they must all be upgraded to a multiple-disc platform to be reliable and hold any increased power over stock. It utilizes bands, hydraulic throttle valves, and governor pressure to control shift timing. The 48-RE transmission will never be a smooth-shifting transmission, or have the consistency of the newer designed transmissions. The big jump into overdrive creates a large RPM drop, making it somewhat unpleasant for towing. The already outdated low line pressure transmission makes it difficult to control the application of the converter clutch, which provides unpleasant torque converter application. ![]() Although the 48-RE can be upgraded to be extremely reliable and handle very high power levels, the shifting of an upgraded 48-RE transmission still has the feel of an old school 4 speed automatic of the past. The torque converter utilizes PWM technology, allowing for precise application of the converter clutch, which provides smooth torque converter application. The 68-RFE transmission was clearly designed to be the least expensive to manufacture. As a result, there are many elements that must be upgraded in this transmission to make it reliable and handle higher power levels. Even the transmission case is cheaply designed and must be reinforced with a large aluminum pan and the exclusive ATS 68-RFE case brace to keep if from cracking in half.
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