2026 HEMI or Hurricane?

[HSKR R/T]

Higher RPMs doesn't mean the hemi is working harder than a forced induction at lower rpms. 30 psi of boost is a huge amount of stress on an engine. As for the bearings, high load at lower rpms is absolutely terrible for them.

You cannot deny the facts man, those hurricanes are highly stressed. What's less certain is how well they will survive vs the hemi, but Ram engineers are not putting hurricanes in 2500's for a reason, and yet the 5.7 was used for years as the base engine. The hemi was built in a different era, when engines were all cast iron block and meant for heavy duty. The hurricane is a passenger car engine meant to squeeze out every ounce of power out of a lightweight, low cost engine with low emissions and higher MPG.

Hurricanes also use spray on cylinder liners that become like paper and delaminate if they overheat, and any possible damage to them means you can't repair them easy etc.

You call the Hurricane a "passenger car engine" yet it was used in trucks and heavy SUVs long before any "passenger car". By that rationale, the Hemi is a passenger car engine as well since it's been used in more passenger cars than trucks. And, while the 5.7 was used in HD trucks for several years as soon as the 6.4 came about, it got replaced because it was under powered. Shoot, they used normally aspirated slant 6 engines in old farm trucks that hauled heavy loads back in 60s and 70s.

As for the cylinder wall link gaz they are much harder surfaces than any cast iron block, or steel sleeves aluminum block. The process has been in used for many years in a variety of diff engines. The 5.0 Coyote uses same process. It's probably less of an issue than lifters on the Hemi.

You keep saying the Hurricane is maxed out, or over stressed. Throw out the 30 psi of boost number as if the engine is constantly forcing that much pressure through the engine from the time you start it,until you shut it off. In reality, it will rarely see that high of boost, unless you are pedal to the floor max acceleration and high RPMs. Your general lack of understanding of this engine, and really all turbo engines in general, is quite apparent

 

[NorskieRider]

I'd argue that nearly all 1500's are used as passenger vehicles anyways so it's probably a moot point to consider which one is stressed more than the other to where it makes any difference in longevity.

The increased complexity of the Hurricane is probably going to be a bigger factor than actual "wear" but so far we haven't seen wholesale failures disabling them, like the 5.7's MGU and lifter issues.

 

[silver billet]

I'd argue that nearly all 1500's are used as passenger vehicles anyways so it's probably a moot point to consider which one is stressed more than the other to where it makes any difference in longevity.

The increased complexity of the Hurricane is probably going to be a bigger factor than actual "wear" but so far we haven't seen wholesale failures disabling them, like the 5.7's MGU and lifter issues.

Yeah the ET is unfortunate lol. The lifter issues have been pretty much cleared up when they redesigned and went to thicker needle bearings back about 8 to 10 years ago, just when they get a handle on that they foist that ET stuff on us.

 

[HSKR R/T]

The increased complexity of the Hurricane is probably going to be a bigger factor than actual "wear" but so far we haven't seen wholesale failures disabling them, like the 5.7's MGU and lifter issues.

This thought process is something I just don't understand. What exactly makes the hurricane more complex than the Hemi?

 

[Scram1500]

The 5.7 in the HD didn't have MDS amongst other differences which made it fine for it's intended use in the 2500. Horsepower and torque are rarely the limiting factors for towing and payload. They dropped it because everyone wants the 6.4 just because and it didn't make sense financially to keep the 5.7 option for the few that wanted it.

Inline 6 engines are one of the least complicated engine designs. Compared to a V6, it has 40% fewer moving parts. Imagine how many less moving parts than a V8. Adding a hairdryer is nothing new and so far it seems they have done it correctly.

 

[Ramintime]

Higher RPMs doesn't mean the hemi is working harder than a forced induction at lower rpms. 30 psi of boost is a huge amount of stress on an engine. As for the bearings, high load at lower rpms is absolutely terrible for them.

You cannot deny the facts man, those hurricanes are highly stressed. What's less certain is how well they will survive vs the hemi, but Ram engineers are not putting hurricanes in 2500's for a reason, and yet the 5.7 was used for years as the base engine. The hemi was built in a different era, when engines were all cast iron block and meant for heavy duty. The hurricane is a passenger car engine meant to squeeze out every ounce of power out of a lightweight, low cost engine with low emissions and higher MPG.

Hurricanes also use spray on cylinder liners that become like paper and delaminate if they overheat, and any possible damage to them means you can't repair them easy etc.

Higher RPMs doesnt mean working harder??? Of course thats what it means, why else would there be a tachometer in every single vehicle? The SO hurricane doesn't make 30 psi of boost...only about 20. Even if it did max out at 30...its not sustained 30 PSI boost....ever. yes theres a little more stress on the valves and cylinders, but read my earlier post.

 

[Ramintime]

This thought process is something I just don't understand. What exactly makes the hurricane more complex than the Hemi?

I definitely wouldn't say more complex, just complex in a different way. With the Hemi you have the lifters, Etorque, and way more moving parts in the engine block over the Hurricane.
Whereas as the Hurricane has extra coolant lines, oil feed lines and of course the turbos themselves. So not really more complex, just different.

 

[NorskieRider]

This thought process is something I just don't understand. What exactly makes the hurricane more complex than the Hemi?

I'm thinking about the turbo's and everything to support them (intercooler, second cooling system, additional sensors, valves, etc). If the components aren't there they can't fail. I don't think it's a problem though, it seems RAM got these systems on the Hurricane right.

Inline 6 engines are one of the least complicated engine designs. Compared to a V6, it has 40% fewer moving parts. Imagine how many less moving parts than a V8. Adding a hairdryer is nothing new and so far it seems they have done it correctly.

The I6 is my favorite engine design for many reasons, including the above and how smooth they run.

It seems to me that anyone who needs to tow heavy and often would choose the 6.7L over the 6.4L HEMI.
Over in the HD forums do they discuss I6 vs HEMI?

 

[silver billet]

Higher RPMs doesnt mean working harder??? Of course thats what it means, why else would there be a tachometer in every single vehicle? The SO hurricane doesn't make 30 psi of boost...only about 20. Even if it did max out at 30...its not sustained 30 PSI boost....ever. yes theres a little more stress on the valves and cylinders, but read my earlier post.

As I said, low rpms and high load is a sure way to kill your bearings. A NA hemi will run for days at 4000 RPMs, that doesn't kill an engine in the slightest.

Again, there is a reason not a single heavy duty 3/4 or 1 ton truck uses small displacement turbos at 30 PSI of boost. Not even Ford the queen of tiny turbos does this, instead they invested millions in a new NA, 7.3, big iron block pushrod v8, despite having the 3.5 ecoboost on the shelf they could have stuffed in there.

I'm not repeating this over and over again so you just believe what you feel like, doesn't matter to me.

 

[BowDown]

As I said, low rpms and high load is a sure way to kill your bearings. A NA hemi will run for days at 4000 RPMs, that doesn't kill an engine in the slightest.

Again, there is a reason not a single heavy duty 3/4 or 1 ton truck uses small displacement turbos at 30 PSI of boost. Not even Ford the queen of tiny turbos does this, instead they invested millions in a new NA, 7.3, big iron block pushrod v8, despite having the 3.5 ecoboost on the shelf they could have stuffed in there.

I'm not repeating this over and over again so you just believe what you feel like, doesn't matter to me.

Except for the low RPM that kills bearings is called lugging and typically under 1400 RPM or in the wrong gear neither of which the RAM PCM will not allow either engine to operate at under load. Stop with the BS

Again with the 3/4 ton vs 1/2 ton truck uses comparisons; yeah, you should stop repeating yourself because you're still wrong

 

[kdoublep]

Its called Biotech Lubegard for engines. It's not for transmissions as posted. It's not syrup in a bottle. Please stop comparing it to STP from 1970 as well.

I live in FL. I use 5w30 and a few ounces of Lubegard. Stop your nonsense! My truck just hit 100K. The only thing broke is the fuel pump modulator which I just replaced in my driveway tis weekend and a cracked manifold or bolt which is my next project.

Pics attached for viewing pleasure.

 

[Davenator]

My first Hemi had to have exhaust leaks (broken header bolt or cracked manifold) repaired something like 6 times.

My second Hemi had to have an exhaust leak fixed at 40-something K miles and when I traded it in with 73K (roughly) on it, it had just started to sound like it had a new exhaust leak that would need to be fixed soon.

And those many, multiple exhaust leak repairs really are nothing to do with why the Hemi would be my last choice.

The Hemi is just an outdated, obsolete engine design that has been Band-aided with a crap-ton of tech to try and cover up its shortcomings - and which just serves to add even more failure points to the motor (e.g. eTorque). And it's still a dog.

My '21 EcoDiesel with an EPA-compliant GDE tune was way nicer to drive.

My SST HO is WAY nicer to drive than either.

 

[Ramintime]

As I said, low rpms and high load is a sure way to kill your bearings. A NA hemi will run for days at 4000 RPMs, that doesn't kill an engine in the slightest.

Again, there is a reason not a single heavy duty 3/4 or 1 ton truck uses small displacement turbos at 30 PSI of boost. Not even Ford the queen of tiny turbos does this, instead they invested millions in a new NA, 7.3, big iron block pushrod v8, despite having the 3.5 ecoboost on the shelf they could have stuffed in there.

I'm not repeating this over and over again so you just believe what you feel like, doesn't matter to me.

Well, yes...too low of an RPM will absolutely cause problems, but even a turbo engine and towing, the rpms arent going to be below 2 - 2.5k. But 4000 RPMs is not high, plus comparing a half ton to something thats rated to tow 20k pounds is a flawed comparison. Look...I'm all for V8 engines, I'm happy to have a Hemi. But we can't ignore the fact that the Hurricane has already been proven to be just as capable.

 

[silver billet]

Well, yes...too low of an RPM will absolutely cause problems, but even a turbo engine and towing, the rpms arent going to be below 2 - 2.5k. But 4000 RPMs is not high, plus comparing a half ton to something thats rated to tow 20k pounds is a flawed comparison. Look...I'm all for V8 engines, I'm happy to have a Hemi. But we can't ignore the fact that the Hurricane has already been proven to be just as capable.

In fact, for the third time now, the hurricane cannot power a 3/4 or 1 ton, because they are not just as capable. The 5.7 hemi can survive the duty cycle of a 2500; THAT is proven. The hurricane cannot. You may decide for yourself that your use case does not require that duty cycle in a 1500, and that's fine, but you cannot sit here and argue that the hurricane is just as capable, because it most certainly is not... for any definition of capable that includes "durable" and "reliable".

NA, pushrod, port injected, iron block V8's have long been the way to make power reliably, and cheaply. This is not my opinion, this is simply a fact that was true 30+ years ago and still true today.

 

[BowDown]

Well, yes...too low of an RPM will absolutely cause problems, but even a turbo engine and towing, the rpms arent going to be below 2 - 2.5k. But 4000 RPMs is not high, plus comparing a half ton to something thats rated to tow 20k pounds is a flawed comparison. Look...I'm all for V8 engines, I'm happy to have a Hemi. But we can't ignore the fact that the Hurricane has already been proven to be just as capable.

You're wasting your time with him

 

[HSKR R/T]

I'm thinking about the turbo's and everything to support them (intercooler, second cooling system, additional sensors, valves, etc). If the components aren't there they can't fail. I don't think it's a problem though, it seems RAM got these systems on the Hurricane right.



The I6 is my favorite engine design for many reasons, including the above and how smooth they run.

Complex is probably the wrong word to use. Turbos are not complex if you know how they work. Turbo systems are not complex.

Again, there is a reason not a single heavy duty 3/4 or 1 ton truck uses small displacement turbos at 30 PSI of boost. Not even Ford the queen of tiny turbos does this, instead they invested millions in a new NA, 7.3, big iron block pushrod v8, despite having the 3.5 ecoboost on the shelf they could have stuffed in there.

I'm not repeating this over and over again so you just believe what you feel like, doesn't matter to me.

Using that logic, not a single 3/4 ton uses the small V8 all of the Big 3 use in their 1/2 tons. So you should never buy a 1500 with the smaller V8.

 

[NorskieRider]

Again, there is a reason not a single heavy duty 3/4 or 1 ton truck uses small displacement turbos at 30 PSI of boost. Not even Ford the queen of tiny turbos does this, instead they invested millions in a new NA, 7.3, big iron block pushrod v8, despite having the 3.5 ecoboost on the shelf they could have stuffed in there.

I'll wager that there is no market for smaller displacement turbo's in the HD trucks. The gas offerings (6.4, 7.3 etc) are the economical low-powered options in a field of turbo-diesels making 2x the torque. A 15 second google search shows those are pushing 25-30 psi of boost so we can speculate that there's no reluctance to use turbos and boost in HD trucks.

On that note, we're all just speculating anyways. "not economically feasible" is my guess why the HD's have the 6.4 and not the hurricane.

 

[BowDown]

I'll wager that there is no market for smaller displacement turbo's in the HD trucks. The gas offerings (6.4, 7.3 etc) are the economical low-powered options in a field of turbo-diesels making 2x the torque. A 15 second google search shows those are pushing 25-30 psi of boost so we can speculate that there's no reluctance to use turbos and boost in HD trucks.

On that note, we're all just speculating anyways. "not economically feasible" is my guess why the HD's have the 6.4 and not the hurricane.

Same reasons 1500's don't have HD diesel engines, his argument is just logically dumb

 

[silver billet]

I'll wager that there is no market for smaller displacement turbo's in the HD trucks. The gas offerings (6.4, 7.3 etc) are the economical low-powered options in a field of turbo-diesels making 2x the torque. A 15 second google search shows those are pushing 25-30 psi of boost so we can speculate that there's no reluctance to use turbos and boost in HD trucks.

The tiny turbos are more than capable of putting down more power than the big gas engines, yet they don't use them there and Ford even spent millions developing the 7.3 and 6.8 specifically for (and only for) the HD market... stop and think please.

Ford engineer was directly asked by TFL why, and his (engineer's) response was duty cycle and mpg. Not speculation.

The big HD diesel engines are in a completely different class than the small 3.x passenger car engines. The cummins is used in agriculture applications and large busses but you think that means you can compare it to a small lightweight sh|t box engine just because they use turbos lol. However you ask a heavy duty diesel mechanic about turbos on those diesels and they will tell you they are wear items. Not "if", "when".

Thing is, when you need 1000 lb/ft of torque for your application to pull your load, you have no choice but to go forced induction. When you only need 400ish hp, you have other options, and NA is the better/more reliable choice.

 

[Mill72]

The tiny turbos are more than capable of putting down more power than the big gas engines, yet they don't use them there and Ford even spent millions developing the 7.3 and 6.8 specifically for (and only for) the HD market... stop and think please.

Ford engineer was directly asked by TFL why, and his (engineer's) response was duty cycle and mpg. Not speculation.

The big HD diesel engines are in a completely different class than the small 3.x passenger car engines. The cummins is used in agriculture applications and large busses but you think that means you can compare it to a small lightweight sh|t box engine just because they use turbos lol. However you ask a heavy duty diesel mechanic about turbos on those diesels and they will tell you they are wear items. Not "if", "when".

Thing is, when you need 1000 lb/ft of torque for your application to pull your load, you have no choice but to go forced induction. When you only need 400ish hp, you have other options, and NA is the better/more reliable choice.

Turbos on diesel trucks are the least problematic issues.