For the guys who think deactivating the mds via a tune is a good idea

[Wild one]

If I replace the MDS cam with a non-MDS cam/lifters, along with installing the factory MDS solenoid replacement plugs.... does that get rid of all the cam/lifter issues, including any issues with long idling?

It seems there's a lot of talk about poor cam/lifter oiling on these later blocks, and warnings against idling for long periods.

Nope even the factory non-mds engines have cam issues. If you replace the cam with a high quality aftermarket cam,that's about the best thing you can do to miniunize the cam issues.The factory cams are ground on a cast core cam blank,and that's their biggest issue,alot of the higher end aftermarket cams are ground on a billet core,and are alot harder then the factory cam

 

[Wild one]

From my old GM perspective.... Selling parts on the "sly" by a parts manager, which were destined for factory retrieval, has put a couple of guys in legal hot water. But, the regimes, and times regarding that may have changed. I doubt it, though.

It's never bothered any of the parts managers i've bought engines from. How does it put anybody in "legal" hotwater,please explain that.The dealers aren't required by any law that i know of to sell the engines back to Ma Mopar.Mopar reimburses them for the core,which is tacked onto the engine,and isn't reimbursed till the engine is returned,but as far as know the dealer can sell the core themselves,and they might get more then what the factory pays for a core,plus they don't have to do all the paperwork involved with shipping a core back,and then waiting to get reimbursed for the core. When i was good buddies with the local warrenty guy he even told me Ma Mopar didn't actually want the engines back anyways,as then they had to deal with them,and either store them or rebuild them.Maybe things are differant south of the border,but north of the border i never had any issues buying a warrenty replacement engine from the local dealers

 

[mdc1990zr1]

It's never bothered any of the parts managers i've bought engines from. How does it put anybody in "legal" hotwater,please explain that.The dealers aren't required by any law that i know of to sell the engines back to Ma Mopar.Mopar reimburses them for the core,which is tacked onto the engine,and isn't reimbursed till the engine is returned,but as far as know the dealer can sell the core themselves,and they might get more then what the factory pays for a core,plus they don't have to do all the paperwork involved with shipping a core back,and then waiting to get reimbursed for the core. When i was good buddies with the local warrenty guy he even told me Ma Mopar didn't actually want the engines back anyways,as then they had to deal with them,and either store them or rebuild them.Maybe things are differant south of the border,but north of the border i never had any issues buying a warrenty replacement engine from the local dealers

I believe the manufacturer only gives you core credit on a reusable block. If you shot a rod thru the side, you wouldn't get the core credit. In that case, the installing shop would just scrap the block and not waste the time or money to ship it back. So I don't believe that they believe they will get each block back to rebuild.

 

[04fxdwgi]

OMG! A MDS long block? Noooooo wayyyyyyy.

My preference would be as you mentioned earlier, buy a truck 6.4L and have it rebuilt at my favorite engine shop Reid's Automotive in Whitman, MA.

That long block does look nice though, and at $6,500 is a good deal, I'd snatch that up in a minute if it had no MDS. Buying a used one and having it rebuilt would probably cost me about same amount......

Wow. Can't believe Reids is still rocking. Used them in the very late 60's & the 70's when I lived in Norwell and Marshfield, MA. They were THE go to guys for machining when I was rebuilding big HP Mopar engines.

 

[Mojo88]

Wow. Can't believe Reids is still rocking. Used them in the very late 60's & the 70's when I lived in Norwell and Marshfield, MA. They were THE go to guys for machining when I was rebuilding big HP Mopar engines.

I believe the son (Jim Jr) is running it now. I haven't had an engine built there in about 10 years. They are just a wonderful bunch of guys. I used to go up there for the Christmas parties, the shop would be absolutely packed with his customers, and Jim Sr cooked up tons of great food! I would take my dog with me, and let him run around with the other dogs (no kids at this party, just doggies, haha), socializing and getting tasty treats from everybody.

 

[Sherman Bird]

It's never bothered any of the parts managers i've bought engines from. How does it put anybody in "legal" hotwater,please explain that.The dealers aren't required by any law that i know of to sell the engines back to Ma Mopar.Mopar reimburses them for the core,which is tacked onto the engine,and isn't reimbursed till the engine is returned,but as far as know the dealer can sell the core themselves,and they might get more then what the factory pays for a core,plus they don't have to do all the paperwork involved with shipping a core back,and then waiting to get reimbursed for the

 

[Wild one]

"South of the border?"
Working in as many of the stealerships as I have, whether or not it "bothered" a mere worker bee in the big picture, the turned in engine isn't theirs TO sell. Getting caught doing that results in immediate firing; well, at least down here where all of us hicks and morons are "south of the border". Whatever border that may be.

Dig out your globe,i'm sure you'll figure out which border i'm talking about when i say down south. The worlds alot bigger then just the good ole US of A Sherm,lol.
I think you're really stretching things there with the "immediate" firing comment I've had a couple dealers phone me and ask if i can unload a warrenty replacement 5.7 or 6.4,as they'd rather sell them locally then ship them back for reimbursement,so i'm pretty sure you're wrong,otherwise they wouldn't be phoning my phone.
By the way hunt up this "law" you're claiming that requires a dealer to send them back,i'll wait.If the dealer pays the core fees,the engines theirs to sell,and unless you got proof they can't sell the engine,you're wrong.All Ma Mopar worries about is if the "core fee" gets paid.
Did you get up on the wrong side of the bed this morning,nobody said anything about "morons or hicks" except you

 

[Mojo88]

....I've had a couple dealers phone me and ask if i can unload a warranty replacement 5.7 and 6.4,as they'd rather sell them locally then ship them back for.....

Approx what kind of money would they get for a 6.4L, and how much repair work was typically needed to fully restore one of these engines?

I'm still contemplating that new OEM long-block 6.4L you linked earlier. That $6500 price tag seems like a no-brainer, but I'd want to make it into non-MDS, so I'm guessing another $1000 or so for cam, lifters, gaskets and plugs? So for ~$7500 I'd have a brand new non-MDS 6.4L, that sound about right?

Thanks

 

[Wild one]

Approx what kind of money would they get for a 6.4L, and how much repair work was typically needed to fully restore one of these engines?

I'm still contemplating that new OEM long-block 6.4L you linked earlier. That $6500 price tag seems like a no-brainer, but I'd want to make it into non-MDS, so I'm guessing another $1000 or so for cam, lifters, gaskets and plugs? So for about $7500 I'd have a brand new non-MDS 6.4L, that sound about right?

Thanks

You'd only need half the lifters,as the new non-mds lifters already in the block are transferrable onto a non-mds cam

 

[Wild one]

Approx what kind of money would they get for a 6.4L, and how much repair work was typically needed to fully restore one of these engines?

I'm still contemplating that new OEM long-block 6.4L you linked earlier. That $6500 price tag seems like a no-brainer, but I'd want to make it into non-MDS, so I'm guessing another $1000 or so for cam, lifters, gaskets and plugs? So for about $7500 I'd have a brand new non-MDS 6.4L, that sound about right?

Thanks

There's also this long block Mojo,with aftermarket non-mds cam already installed.

6.4L HEMI Engine Long Block - 68293006AA

6.4L HEMI MMX Performance Camshaft installed NA Long Block

www.modernmusclextreme.com

 

[Mojo88]

Nope even the factory non-mds engines have cam issues. If you replace the cam with a high quality aftermarket cam,that's about the best thing you can do to minimize the cam issues.The factory cams are ground on a cast core cam blank,and that's their biggest issue,a lot of the higher end aftermarket cams are ground on a billet core,and are a lot harder then the factory cam

So even if MDS was eliminated completely on that brand new OEM 6.4L long block you linked, and I used Comp Cams lifters/cam setup, I might still be subject to the infamous "Hemi tick"? This is disheartening.

Are there any aftermarket oiling solutions to this issue?

Thanks

 

[Wild one]

So even if MDS was eliminated completely on that brand new OEM 6.4L long block you linked, and I used Comp Cams lifters/cam setup, I might still be subject to the infamous "Hemi tick"? This is disheartening.

Are there any aftermarket oiling solutions to this issue?

Thanks

Bypass Comp cams,there's better truck cams available from the outfits who specialize in the hemi truck. Very few of the better aftermarket cams when used with the OEM non-mds lifters ever have an issue.Don't use Comps lifters they've started to manufacture them in house,but they're still having issues with them.Go to someplace like Moes / MMX or FRP for a truck specific cam.Talk to Matt Fikac at Moes or Ryan at FRP for help on picking a cam that'll work for you're application

 

[Sherman Bird]

So even if MDS was eliminated completely on that brand new OEM 6.4L long block you linked, and I used Comp Cams lifters/cam setup, I might still be subject to the infamous "Hemi tick"? This is disheartening.

Are there any aftermarket oiling solutions to this issue?

Thanks

I'm not trying to insult you or your intelligence, nor pi$$ you off... but you REALLY should look up Lake Speed Jr.'s you tube channel (the oil geek) and watch his videos. You will get your eyes opened really fast!

 

[Mojo88]

I'm not trying to insult you or your intelligence, nor pi$$ you off... but you REALLY should look up Lake Speed Jr.'s you tube channel (the oil geek) and watch his videos. You will get your eyes opened really fast!

Beat ya to it. I've been subscribed to his channel for a while. But I don't think I ever saw him try to diagnose the MDS or cam or 'Hemi tick' issue.