Getting Your Rig Back on the Road with a 3406e long block

If you're staring down a massive repair bill, picking up a 3406e long block might just be the smartest move you make this year. Let's be real for a second: when your engine starts making "expensive" noises or you find a puddle of coolant where it definitely shouldn't be, your stomach drops. You start doing the math in your head, wondering if it's time to trade the truck in or if there's a way to squeeze another million miles out of the old girl. For most of us running these classic Cats, the answer is almost always to fix it. These engines were built to work, and replacing the core components with a fresh long block is usually the most cost-effective way to get back to making money. ...

April 30, 2026 · 7 min · Jens Goldstone