Greg Alberalla, or “Greg A” to his fans, made a bold career shift in 2016 when he transitioned from running a performance parts retail store to becoming a full-time content creator – and the rest, as they say, is diesel history. The Cummins-powered truck enthusiast has since produced more than 1,200 videos that have amassed over 80 million views and a YouTube following that now sits at 300,000-plus subscribers. The Kentucky-based mechanic has also built an eye-popping fleet of diesel trucks. From a tube-chassis quarter-mile race truck to a Gen 5 dually tow rig, Alberalla builds trucks that are both beautiful and undeniably beastly.
Climbing In
Alberalla purchased his first diesel truck at just 18 years old — a 2005 RAM 2500 that would eventually become the most talked-about diesel drag truck on the planet. Like most first builds, it started simply. Greg took a wrench to it, upgraded parts as he learned, and let the truck evolve naturally. That evolution took a sharp turn after a trip to the track ended with a broken transmission. Instead of dialing things back, Alberalla doubled down.
Video transcript: Walkaround Greg Alberalla’s 1500 HP Drag Truck
Hey guys, what’s going on? My name is Greg and most people know me as Greg A for my YouTube channel, have a truck behind me that we want to highlight and walk around a little bit. This has all been documented on my YouTube if you want the full rundown, but we’re going to do a quick walk-around rundown of the trucks it’s a 2005. Ram 2500 actually was my first ever diesel truck that I had ever bought when I was 18 or 19.
It’s transformed over the years. Went to my local racetrack for my first time and end up breaking a transmission. Then it snowballed from that. It’s been with me throughout my progression in the diesel industry.
Underneath the hood, the stock engine wasn’t really cutting it for our power goals, so we ended up getting teamed up with the awesome guys at Freedom racing engines, and we have one of their street stage 2 engines. It is one of their fully built engines top to bottom, of course, had to upgrade the turbo. So we’ve got a stainless diesel turbo in their truck on fuel before nitrous makes about 1,000 horsepower. We still do drive the truck around on the street.
From time-to-time. It’s not a full-blown race vehicle, but it’s a teetering edge as we keep wanting more and more horsepower. On spray, the truck makes about 1,500 horsepower. It’s got fully built transmission behind it as well.
Still a full weight quads have truck. So it is fairly heavy but wheel run has run a 598 mile does make quite a bit of power for how much it weighs. Wheels, tire, suspension on the truck, we do have a drag racing setup on it. A set of 16-inch, we’ll sum M and H cheater slicks on here as well.
We’ve got some double adjustable shocks. Recently, one of the big transformations that we have done with the truck is decided to take it to the next level as far as safety goes. So in order to keep going faster and faster, we ended up having to put a roll cage in it. So it is an 850 certain roll cage in it and we decided to back half the truck as well, which basically means we took all of the rear suspension out of the truck and put in all new two chassis suspension in the back to get our 60 foot better.
Launch harder, all of that stuff. Inside here, nothing too crazy. We do have a set of bucket racing seats. Again, just for safety.
We’ve got an aftermarket steering wheel, but as far as the interior goes, you guys can see we’ve tried to make the cage fit as tightly and nice as possible. So when we do drive it on a screen, it’s actually not as easy as it looks, but still has a full bash, still has the radio. We’ve got our banks data logging gauges here right in the center. But other than that, nothing crazy on the inside.
Anyway, guys, that’s a quick walk-around wrap-up of the truck behind me. Like I said, if you guys want to see some more specific details on the Build, there’s tons of episodes on my YouTube channel, but there’s a brief rundown. Biggest encouragement I can give you guys if you’re looking to build something similar is just to get out in the garage and do it. We started this bill basically out of my two-car garage when I first started tinkering.
If I can do it, I know you guys can do it as well. Get out there, get to wrenching and have fun doing it and build some cool stuff.
What began as a street-driven daily slowly transformed into a truck that blurred the line between outrageous street machine and full-blown race truck. Out went mild mods. In came serious hardware: a Freedom Racing Engines-built Cummins, upgraded turbo systems, reinforced suspension and full safety equipment for going very fast. The build didn’t just change the truck, it reshaped Greg’s entire path in the diesel world.
From new truck owners to seasoned mechanics, Alberalla’s authenticity and hands-on approach have made him a trusted figure in the diesel community. Whether he’s documenting a four-digit horsepower build or walking viewers through a simple oil change, the content is always educational, candid and real.
“From a young age, I have always been into turning wrenches in the garage and diesel motorsports building trucks,” said Alberalla. “I started a YouTube channel as a hobby that has grown into a fulltime job making videos of building trucks and traveling to races and events with our builds.”
Garage Super Star
Alberalla’s deep knowledge of diesel engines — particularly Cummins-powered RAMs — has carved out a solid niche in a crowded content space. While many creators chase supercars and exotics, Alberalla has stayed grounded in diesel trucks. His channel delivers mechanical insight, honest product reviews and practical advice that resonates with people who actually wrench on their own rigs.
From his early street-race setups to what would eventually become a 3,337-horsepower Cummins monster, Alberalla’s personal truck lineup puts decades of diesel evolution on display. When he endorses a part or a tool, his audience knows it’s been tested the hard way — under load, on the dyno and at the track.
The Why
Alberalla has built his reputation through attention to detail and a commitment to quality, a mindset that carries through his brand partnerships. One standout collaboration is with Banks Power. When he installed their Ram-Air differential cover, he didn’t just praise it — he explained why it worked. He walked viewers through the airflow design, cooling strategy and engineering decisions that made it smarter than competing options. That willingness to break down the “why” has been key in building trust with his audience.
Street Truck to Record Breaker: The 3,337-HP Cummins
The truck that now holds the diesel chassis dyno horsepower record didn’t start as a record-holder, it started as a daily driver. Over nearly two decades of ownership, Alberalla’s 2005 Ram has gone through multiple engines, transmissions and full rebuilds, evolving as diesel performance technology advanced.
In 2015, the truck was already pushing boundaries by making 980 horsepower, a nearly unthinkable number for a street-oriented diesel at the time. As turbos grew larger, fueling systems improved and engine architecture advanced, Alberalla continued raising the bar. What was once a “wild” street truck transitioned into a purpose-built race and dyno platform.
That long-term development culminated in 2025, when the truck stunned the diesel world by laying down 3,337 horsepower on an industry-standard SuperFlow dyno — officially setting the highest recorded diesel pickup dyno number to date, edging the previous record by a single point. Importantly, it wasn’t a one-hit wonder. The truck has repeated 3,000+ hp dyno pulls multiple times, cementing its legitimacy and proving the combination’s durability and consistency.
More than just a number, the record is the result of years of iteration, setbacks and refinement, mirroring Alberalla’s own growth as a builder. The truck stands today as both a rolling history lesson in modern diesel performance and a benchmark for what’s currently possible.
3,000 Horsepower Gitty-Up
While Alberalla typically focuses his camera on practical know-how, he’s just as comfortable in the rarified air of extreme-performance diesel builds. The record-setting Cummins isn’t about shock value; it’s a case study on how far diesel engineering has come. Built for dyno events and quarter-mile punishment, the truck exemplifies what happens when passion, patience and technical expertise converge.
Despite this achievement, Alberalla never loses sight of practicality. His ability to juggle over-the-top horsepower builds with everyday truck projects highlights his versatility as a creator. He teaches fans that, while raw power is thrilling, reliability and functionality are key.
Driving into the Future
Alberalla shows no signs of slowing down. His YouTube channel continues to grow, his builds keep pushing limits and his enthusiasm for the diesel community remains contagious. From record-breaking horsepower feats to everyday maintenance tips, Alberalla’s work is proof that the best builds aren’t rushed — they’re earned one wrench turn at a time.
What the video shows
Greg Alberalla services the 48RE automatic transmission in one of his trucks. He shows how to adjust the second-gear band and the low-reverse band, then changes the filter and refills the transmission with AMSOIL fluid. He calls it one of the most important maintenance jobs a 48RE owner can learn.
Recommended AMSOIL products
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