The Diesel Podcast

They Put a 7.3L Powerstroke in a ‘79 F250

Diesel Conversion Specialists converted a 1979 F250 to a 7.3L Powerstroke with 4R100! They chat with us about the details of fitting the engine, turbo, downpipe, transmis

600HP L5P with Emissions-Intact

Lenny from Dynomite Diesel joins us to talk about L5P injectors, a 600HP build, and his thoughts on the 8.3L Duramax. We also cover injector nozzles and how manufacturing

10 Speed Swap for the 7.3L Powerstroke!

A listener reached out and wanted us to discuss the 10R140 swap behind a 7.3L Powerstroke. We are joined by US Shift, the company pioneering the controller and swap, alon

Ford 10R140 vs Allison 10L1000 - Which is Better?

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Is Red Dye Diesel Safe for Your Truck?

Red dye diesel was recently approved for use on public roads and people are asking - is it safe to use? Power Service joins us today to answer if it’s ok for modern diese

This Upgrade Can Make Your Transmission Last Longer

One of the most overlooked upgrades for transmissions is the cooler itself. Fluidyne joins us today to talk about diesel transmission coolers, when an upgrade is in order

Why Diesel Manual Transmissions Fail - and How to Fix Them

Andrew at Long Range Gear chats with us about manual transmission failures, the challenge with discontinued parts, and ways he is innovating with cutting edge technology.

Are Truckers Really Going on Strike Oct 1st?

There’s been online noise about a potential trucker strike on October 1st. We ask a trucker what he’s seeing and hearing on the road and from fellow truckers. Why would t

Before You Buy 6.7L Powerstroke Injectors, Watch This

With some 6.7L Powerstroke trucks getting some miles on them, worn out injectors can become an issue. Holder’s Diesel joins us to go over what to look for, sizing a set f

A Big Change is Coming to Diesel Oil

In a few months, the oil we can purchase on the shelves changes. Shawn Whitacre, Principal Engineer at Chevron Lubricants, joins us for an in-depth look at the changes. W

Don’t Rebuild a 6.7L Powerstroke Without These Upgrades

Early 6.7L Powerstroke owners can take advantage of the improvements Ford made to the engine in 2020+ models. J&K Engines details how every 6.7L Powerstroke that leaves

The Diesel You’ve Never Heard Of

In this episode, we sit down with J&K Engines to take a closer look at the 4.5L Powerstroke - where it came from, what vehicles it was used in, the years it was available

Biggest Problem with 68RFE’s in 2026

John Muldoon from Muldoon’s Performance Transmissions joins us to talk about the biggest problem facing 68RFE’s in 2026. And it’s not what you think. He also tells us com

New Cummins Record from the Bonneville Salt Flats!

Salty Box Racing set a new diesel record and the team joined us from the track! We go behind the scenes at Speed Week 2026 and learn about their Cummins, challenges in th

Best Cummins for an Engine Swap?

Are some factory engines beyond hope and just need a different engine entirely? Diesel Conversion Specialists joins us to take an in-depth look at all Cummins engines, wh

This Muffler Lets Your Diesel Be Loud OR Quiet

Glory Days Speed Shop is back on The Diesel Podcast to talk about the latest updates to the Thunder Muzzle and the idea behind giving diesel truck owners control over the

Biodiesel is Already in Your Fuel - Why It Matters

Power Service joins us to talk about biodiesel and what diesel truck owners need to know about the fuel going into their tanks. Biodiesel can offer benefits, but it can

Why Diesel Injector Sizing is Confusing

Diesel injector sizing can get confusing fast. Percent over, hole size, liters per minute (LPM)—what do these ratings actually tell you, and how do you know which injecto

Cooling System Mistakes That Can Hurt Your Engine

Modern diesel engines generate a lot of heat, and keeping that heat under control puts a huge demand on the cooling system. But how often should you actually change you

You Could Be Buying the Wrong Fuel Filter

Not all diesel fuel filters are created equal—and choosing the wrong one could affect your truck's performance, reliability, and even the life of your fuel system. On