6/21/2023 0 Comments Duramax allison transmission![]() In short, it is a very intelligent transmission that makes well calculated decisions about shifting. When the input shaft to output shaft speed ratio is below 1:1, the tires will rotate less times for each revolution of the crankshaft, multiplying available torque at the expense of top speed.Īllison transmissions use a variety of algorithmic factors to calculate shift behavior electronically, rationalizing factors such as engine load, variables modified by TCM Tuning and in certain years, accelerometer data. When the input shaft to output shaft speed ratio is less than 1:1, the tires will rotate more times for each one revolution of the crankshaft, equating to higher top speed. This is a common platform in 6 speed transmissions. An input shaft to output shaft speed ratio of 1:1 (often 4th gear) is known as direct drive. The term “overdrive” simply means the input shaft to output shaft speed ratio is lower than 1:1, and underdrive is higher than 1:1. This means that there are 2 overdriven and 2 underdriven gears. The Allison 1000, like most 6 speed transmissions, is a “double overdrive”. The Allison 1000 clutch application chart can be found below, with a clutch identification key above! As you can see, the final drive ratios are also included. How the Allison LCT 1000/2000 Clutch Packs Work: The operational tenure of the Allison 1000 Series transmission was ultimately from Model Year 2001 to Model Year 2019. Our Transmissions 101 on the Allison 10L1000 can be found here. Until the 2020 model year’s introduction of the Ford manufactured 10L1000, the Allison 6 Speed platform continued. This will be elaborated upon later in the article! The difference was mostly hydraulic and electronic, with a modification to the input shaft giving it a flat sealing surface at the end for oiling the Torque Converter Clutch (TCC). In 2011, the LML DuraMax was introduced, yielding another revision to the Allison 1000 Transmission. Later, in 2006.5 when the LBZ DuraMax was introduced, came the 6th gear accessible Allison 1000 Transmission. The unit was introduced as a 5 Speed, despite having the ability to employ a 6th gear. This proved to be deeply unreliable over time.Īt the time, and currently, General Motors owns a considerable portion of Allison, and was able to use the coveted Allison transmission in their trucks at a market-competitive cost. Tandem with this powerful new motor was the need for a transmission that could capacitate the newfound torque, as GM historically used slightly armored versions of their 4 Speed lineup in their diesel trucks. In 2001, General Motors began the use of the Isuzu 6.6L DuraMax series motors in their 3/4 ton and above trucks. Footnotes for GM AND Heavy Duty Commercial Vehicle ownersĪ Brief History of the Allison in DuraMax: The strengths (believe it or not, there are a few!) of this transmission Its capabilities (or lack there of) in reference to TCM tuning and shift/lockup protocol modification The most popular failures we witness on the Allison LCT 10 transmissions In this Drivetrain 101, we will be addressing: Top 5 Ways to Extend the Life of a Factory Transmission Calculating Torque Multiplication Factor, Why is it So Important? Top 5 Benefits of an Upgraded or Built Transmission Popular Transmission Information Resources: Additionally, you can see our proprietary Allison Transmission Products here! In this Installment of our popular Drivetrain 101 Series, we will be analyzing all of the knowledge we have compiled here at Next Gen Drivetrain over our years of developing unique and innovative Allison 1000 Transmissions. Without further ado, we’ll jump right in! Hence, we wanted to provide a technical publication serving to aid our DuraMax clientele in understanding their own unique transmission needs and how to ensure maximum reliability for their Allison 1000 Transmission. In order to ensure this over the years, we’ve gone to great lengths to understand and compute how these units fail, and how to prevent it. When we build our coveted and durable Allison transmissions and rebuild kits, each one is designed to never return broken. ![]() Introduction to the Allison 1000 Transmission: Conclusion to the Allison 1000 Transmission How the Allison LCT 1000/2000 Clutch Packs Work ![]() A Brief History of the Allison in DuraMax In this Drivetrain 101, we will be addressing Popular Transmission Information Resources Allison LCT 1000/2000 Product Resources Introduction to the Allison 1000 Transmission ![]()
0 Comments
Leave a Reply. |