Here's How the Jeep M-715 Five-Quarter's 700+ HP Engine Sounds

With the M-715 “Five-Quarter” concept, Jeep somehow turned the already perfect M-715 military truck into something even perfect-er. Among modifications that contributed to bringing this Jeep into the pantheon of legendary concept Jeeps is the Hellcrate engine. Here’s how it sounds.


There’s really not much I can add to the video above. The over 700 horsepower 6.2-liter supercharged Hemi V8 “Hellcrate” sounds better at idle than the standard 2020 Jeep Gladiator sounds at redline.

That’s not saying much, since naturally aspirated V6s are among the most boring sounding motors out there, but the Hellcrate is the total opposite. It’s raw, combining the throaty roar of a V8 with the sinister high-pitched sound of a blower.

It’s perfect. And so is pretty much the whole truck.

Sr. Tech Editor, Jalopnik. Owner of far too many Jeeps (Including a Jeep Comanche). Follow my instagram (@davidntracy). Always interested in hearing from engineers—email me.



Having been around the sun a few times since I first got addicted to boost, it still blows my mind how normalized we’ve gotten to these power numbers. Back in the day it was a huge deal to have 500 horsepower. There were serious drive-ability compromises you had to make to push to the 600hp mark and beyond.

Now you can plop a crate Dodge motor into just about anything and have 700hp to the tires with a warranty. The times we live in.