The 68RFE transmission was clearly designed to be the least expensive to manufacture. Unfortunately, this is where all praise for the 68RFE ends. The torque converter is a PWM design allowing for precise application of the converter clutch which provides a smooth shift. The 68RFE transmission has a fantastic gear split between its 1st through 6th gears providing an almost perfect gear ratio change. Although the 48RE can be upgraded to be extremely reliable and handle very high-power levels, the shifting of an upgraded 48RE transmission still has the feel of an old school 4 speed automatic of the past. If you’re looking to tow a trailer at a higher horsepower, the 48RE transmission may not be the best transmission choice. The AS69RC transmission also relies on engine de-rate that happens between all gear shifts, this engine de-rate makes for a very poor shift quality and massive drivability complaints. The AS69RC has similar size clutch packs, shafts and gear sets as the Allison, however, it does not have an ideal gear split so the Aisin always seems a bit “clunky” and does not handle increased power levels well. This gives the Allison a direct advantage over the 47RE and AS68RC Dodge transmissions.
The Allison 6 speed automatic transmission comes from the factory with large shafts, clutch packs and gear sets. These 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. ATS Diesel Performance is now offering a complete kit so that our Allison 6-speed automatic transmission can be installed behind the Cummins 5.9L and 6.7L engine.ĭue to the nature of the Dodge Ram 48RE, 68RFE, and AS68RC having very small shafts, gear sets and clutch packs, the factory Dodge transmissions require very extensive modifications and expensive hard parts to compete with a built ATS Allison 1000.
ALLISON TRANSMISSION IN DODGE CUMMINS INSTALL
The all-new ATS Diesel Allison Conversion Kit includes all necessary hardware and software to install an Allison LCT1000 behind your Cummins. Our exclusive, patent-pending Allison to Cummins Bellhousing allows a perfect factory match between the Allison and the Cummins with no additional fabrication required. Our revolutionary new TRANSLator ® CAN-bridge module allows the Allison TCM to communicate with the Ram ECM and offers a seamless integration of all factory options on the truck with a nearly plug-and-play installation. Backed by our proprietary TRANSLator ® technology and our exclusive, patent-pending Allison to Cummins Bellhousing, the ATS Swap Cummins to Allison Conversion Kit offers complete factory functionality from your late model Ram from push button start to tow/haul mode, electronic range select and electronic transfer case functionality. ATS Diesel has engineered the first fully integrated Allison transmission swap for Cummins powered vehicles.
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