Ram resurrects Hemi engine - Can I get a swap?

[Rebel_2025_GA]

MSN

Ram resurrects Hemi engine for popular pickup trucks in 'Symbol of Protest'​

Story by Michael Wayland
• 7h•
3 min read

 

[dobbiemiko]

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.

 

[Dewey]

Sucks to be the buyers that paid up for a “Last Call” Hemi in the last few years.

 

[70sgeek]

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.

 

[silver billet]

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.

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.

 

[70sgeek]

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.

 

[silver billet]

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.

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.