Where did you see that spec? I’ve been trying to find something on the internals but just find the basic “everything is new but the camshaft statement”. Hopefully they have a good set of traditional forged rods at that power level.

 

This article is pretty good at breaking down key differences…

How the Demon 170 Hemi Differs from the Redeye Hemi: Deep Dive

When the embargo lifted on the 2023 Dodge Challenger SRT Demon 170 on Monday, we focused on key parts of the new package, including power, performance, and production numbers, but we didn’t get into how this package makes so much more power than the closely-related Redeye. Today, we dive into...

www.stellpower.com

 

Powder forged rods again

 

Direct connection catalog.

 

They must be strong, but now I have more confidence when I get the whipple on my superstock.

 

I was confident with those powder coated rods too...

Then a rod said peek a boo...

 

I'm still wondering what the problem was when they kept blowing engines. Owners are hitting the tracks hard with just a few miles on the them. Hopefully they'll hold up like the rest.

 

I would be more concerned with the transmission. A transmission launching off the transbrake over and over again launching a very heavy car with a lot of grip is brutal on a transmission. A lot of the high powered guys end up going TH400 because of that.

 

You have to realize when the factory does these testing dyno sessions they run the engine wide the **** open for an extended period of time. Not sure how long but it is not a sweep dyno pull to just measure hp output.

 

You have to realize when the factory does these testing dyno sessions they run the engine wide the **** open for an extended period of time. Not sure how long but it is not a sweep dyno pull to just measure hp output.

You are correct. Most likely while on the dyno for testing, one of the tests is something like the engine is set to do a sweep of 5k rpm to near redline while the load is being applied from the dyno, for hours at a time. I'm sure they have all sorts of destructive testing parameters they go through for the longevity testing.

 

I found the test a long time ago but can’t find it. I think the engine had to pass full throttle testing for about 5 days straight at redline to pass(demon motor at full throttle 24/7 for 5 days straight). Here is for Toyota:

Toyota New Car Testing | Maplewood Toyota serving Minneapolis, MN

Toyota builds cars and tears them down. Read about how Toyota tests new vehicles.

www.maplewoodtoyota.com

180hrs at full throttle.

This article has a quote from K

Dodge Blew Up 7 Engines Trying To Certify Ultimate Hellcat For Final "Last Call" Challenger Special | Carscoops

Seventh “Final Call” muscle car misses its planned SEMA debut due to reliability issues with upgraded 6.2L supercharged V8

www.carscoops.com

“It’s not so easy to do. We run these things on wide-open throttle for hours and hours on end, 24-7. The testing on these things is just brutal. So far we’ve grenaded seven engines, but I think we’ve got it figured out.”

doesn’t say how many days though.

 

The redeye engine would use about 10000 gallons of fuel if ran for a week straight lol.

 

WOT at for a WEEK STRAIGHT on this 1000hp+ beast is unfathomable. Passing such a ludicrous test is beyond comprehension. There are some amazing engineers in this country...

 

Is that under a load or just free spinning? There is a big difference between the two. Under a load and sitting full tilt at redline for a week would be brutal. Free revving at redline for a week is also pretty brutal, but nothing close to what stresses would be going on with a load.

 

I did some quick math and the engine would need 10k gallons of fuel to run full tilt for 1 week