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Ram resurrects Hemi engine - Can I get a swap?

I was quite surprised when they dropped the 5.7L Hemi from the half ton market as they built a pretty good reputation with the Hemi over several years. However, my dealer convinced me to trade my 2023 Hemi for a 2025 SST and other than the idiot who decided to take away the physical dipstick, I have been pleased with the new 6 popper. What I miss on the new truck is the sound but I guess I can live with that considering I get similar gas mileage despite a steeper rear gear (3.21 to 3.55), more hp and torque despite losing 159 cubic inches. I had hoped that in the reintroduction of the 5.7 that they would have fixed the dreaded Hemi-tick but it looks like they have not, or at least they are not talking about it. The big question remains for me: is the 3 liter a long lived engine? Only time will tell.
 
70sgeek said:
I can live without a dipstick considering I'd anticipate the next Ram version Hemi also will also still have the problematic MDS, that eats up lifters and camshafts.
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Oh dear. This "MDS" myth just won't die will it.

It's not an MDS issue. It's a parts/manufacturing issue which also seems to be affecting the pentastar to some extent. There are no guarantees with FCA's history that your hurricane doesn't also start eating cams.
 
I guess I should have prefaced better - I get it's not an MDS-specific issue, but at some level it does make sense that it would be part of the problem possibly to the extent of accelerating the timeline to failure in an affected vehicle. I haven't exactly convinced myself it couldn't happen in the SO but I'm at least more hopeful in that respect.
 
70sgeek said:
I guess I should have prefaced better - I get it's not an MDS-specific issue, but at some level it does make sense that it would be part of the problem possibly to the extent of accelerating the timeline to failure in an affected vehicle. I haven't exactly convinced myself it couldn't happen in the SO but I'm at least more hopeful in that respect.
Click to expand...

The issue is poor hardening/materials, they were orginally designed to have billet cams but cheaped out in production. Billet cams are machined from a solid block, they are much harder. Hemi's just have surface hardening, and once that outside layer is degraded its came over.

The one scientific analysis we have of a faled cam is saying there was plenty of oil, but the oil used was inadequate for the job.

Some hemi's come without MDS straight from the factory, and they still fail in relatively equal numbers when accounting for differences in sales/volume sold.
 
Dewey said:
Sucks to be the buyers that paid up for a “Last Call” Hemi in the last few years.
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There has already been lawsuits from the Hellcat Durango guys because they bought the 2024 models because they were advertised as being the last model then they continued to build them for 2025.
 
Anything “last call” or “farewell” is always a marketing scheme because people feed off that crap. Anything to push sales.

But I am glad the hemi isn’t over!
 
Generally, according to accepted and long-established manufacturing methods, surface hardening makes the surface area hard and the core tough and ductile.
Surface hardening is used when parts require long-term durability. Uniform hardening throughout can quite easily make the part brittle.
If you want to argue, be aware you are not arguing with me, but with established science and actual results.
 
Dewey said:
Sucks to be the buyers that paid up for a “Last Call” Hemi in the last few years.
Click to expand...
Ask all the Wrangler buyers that were told for two years in a row that it was the last edition of the 392 Wrangler.
 
yrralguthrie said:
Generally, according to accepted and long-established manufacturing methods, surface hardening makes the surface area hard and the core tough and ductile.
Surface hardening is used when parts require long-term durability. Uniform hardening throughout can quite easily make the part brittle.
If you want to argue, be aware you are not arguing with me, but with established science and actual results.
Click to expand...

The hemi cams are weak. This is not up for debate, there are thousands of reports of ground cam lobs and busted lifters. If you look at the aftermarket, they pretty much all offer billet cams. You can google this stuff in like 10 seconds so how you got this wrong is beyond me.

And no I'm not going to argue, this won't turn out any different than the last 2 discussions you were in.
 
av
"The hemi cams are weak. This is not up for debate, there are thousands of reports of ground cam lobs and busted lifters. If you look at the aftermarket, they pretty much all offer billet cams. You can google this stuff in like 10 seconds so how you got this wrong is beyond me."

I guess it will turn out like the last conversation, because you either can't read or just want to argue. I DID NOT SAY ANYTHING about the hemi cams being strong or weak or whatever. I never even used the word. So before you denigrate me next time learn to read or reason or just plain understand what you've read. The information I posted was and is the exact truth and yes there is a problem with the hemi cams, similar to the problem you have.
 
yrralguthrie said:
av
"The hemi cams are weak. This is not up for debate, there are thousands of reports of ground cam lobs and busted lifters. If you look at the aftermarket, they pretty much all offer billet cams. You can google this stuff in like 10 seconds so how you got this wrong is beyond me."

I guess it will turn out like the last conversation, because you either can't read or just want to argue. I DID NOT SAY ANYTHING about the hemi cams being strong or weak or whatever. I never even used the word. So before you denigrate me next time learn to read or reason or just plain understand what you've read. The information I posted was and is the exact truth and yes there is a problem with the hemi cams, similar to the problem you have.
Click to expand...

Yeah, thought so. 🙄
 
@silver billet is correct here. The 3rd gen Hemi was designed to use a billet cam but was overruled by the bean counters. People who have switched to aftermarket cams have not seen failures after switching.
 
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