If you’re a Duramax diesel enthusiast or truck owner, you’re likely familiar with the Allison 1000 transmission. Revered for its durability, smooth shifting, and ability to handle the power of diesel engines like the GM Duramax, it’s a popular choice in heavy-duty trucks. However, even the best transmissions aren’t immune to problems. In this detailed guide, we’ll combine insights on diagnosing common issues, troubleshooting tips, and upgrading your Allison transmission to ensure your truck keeps running strong under any condition.

The Allison 1000 transmission has long been a cornerstone of GM’s HD truck lineup, particularly in conjunction with the Duramax engines. Over the years, this transmission has undergone continuous refinements to meet the evolving demands of power, performance, and emissions standards. In this post, we'll break down how the Allison 1000 transmission has evolved across six generations of the Duramax engine family: LB7, LLY, LBZ, LMM, LML, and L5P, highlighting key changes and comparing performance across each year range.

David Schaefer’s 2015 GMC 2500HD Denali, known as "Time Bomb," is a remarkable achievement in the world of diesel performance. With a stunning 700 horsepower while maintaining full emissions compliance, this truck is a testament to what can be accomplished with thoughtful engineering and high-quality components. Let’s break down this comprehensive build, exploring the features that make it special and how they come together to create a never before achieved driving experience. 

Diesel engines have many nuances when compared to their gas counterparts, fuel injectors being one of them. Unlike fuel injectors used on direct injection gasoline engines, diesel injectors often have a higher failure rate and shorter lifespan due to their more extreme operating conditions. When these injectors fail, it can lead to a cascade of performance issues, increased emissions issues, and even engine damage.

The 5 & 6-speed Allison 1000 transmission, paired with 2001-2019 6.6L Duramax, is renowned for its durability and performance, especially in heavy-duty applications. Whether you’re towing, hauling, or simply looking to enhance your driving experience, upgrading your Allison 1000 can make a significant difference. Here are the top five upgrades to consider for maximizing the performance and longevity of your Allison 1000 transmission.

If you're driving a 2015-2020 3.5L Ford Transit, you've got a versatile and capable vehicle. However, if you’re looking to optimize fuel economy, transform your driving dynamics, or improve towing performance, custom tuning is the best upgrade you can make. Here’s why a custom tune package offers unparalleled benefits for your Transit: 

Unlocking Peak Performance:

A custom tune can significantly boost your Transit’s performance. With up to a +75 rear-wheel horsepower (RWHP) and +125 ft-lbs of torque increase in power, resulting in 385RWHP and 525ft-lbs of total torque,  a custom tune unleashes the full potential of your Ford Transit's 3.5L EcoBoost engine. Whether you’re seeking exhilarating acceleration or increased towing capacity, the right tune from the right company can transform your Transit into an absolute powerhouse.