09/21/2026
Which HEMI is going to be worth the most one day? 👀
And I’m talking about the ENGINES themselves, not the cars they came in.
The 6.1L HEMI really kicked off the modern SRT era. It arrived in 2005 making 425 hp and 420 lb-ft, first showing up in the 300C SRT8 before making its way into the Charger, Magnum, Challenger and Jeep SRT8. Production ended around 2010, so these motors have already been gone for more than 15 years. When the 300C SRT8 debuted, the entire car was only $39,995 including destination.
Then came the 6.4L / 392 HEMI for 2011. It debuted with 470 hp and 470 lb-ft, replacing the 6.1 in the SRT lineup. The first Challenger SRT8 392 started at about $42,555 before destination, and later versions eventually reached the 485 hp we all know from the S**t Packs.
And then in 2015 Dodge completely changed everything with the supercharged 6.2L Hellcat HEMI. The original made 707 hp and 650 lb-ft, and the first Challenger Hellcat started at just $59,995. At the time, getting over 700 factory horsepower for around $60K was absolutely ridiculous.
But that same basic 6.2L family eventually went WAY further.
We got the Redeye at 797 hp, the original Demon at up to 840 hp, and finally the Demon 170 making 1,025 hp on high-ethanol fuel. The Demon 170 had a $96,666 MSRP and Dodge planned no more than 3,300 of them.
That’s where future value gets interesting.
The 6.1 has history and age going for it. Clean original engines are only going to become harder to find.
The 6.4/392 might be one of the most loved naturally aspirated modern HEMIs ever made, but there were also a LOT more of them produced.
The regular Hellcat 6.2 changed the entire performance world, so I don’t see people ever forgetting that motor.
But if we’re talking about the engines that could eventually command the craziest collector money, I think the Demon/Redeye versions of the 6.2 have a huge advantage because of their factory hardware, horsepower and rarity.
And with engines, originality is going to matter too. A documented, untouched, numbers-matching-style drivetrain from a rare car is a completely different thing than a random used long block sitting on a pallet.
So 15–20 years from now…
6.1, 6.4/392, regular Hellcat 6.2, or Demon/Redeye 6.2 — which HEMI do you think people will be paying stupid money for?