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2012 5.7 cam and lifters bad #2486245
04/22/18 12:06 AM
04/22/18 12:06 AM
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S.E. Missouri
AeroMonte Offline OP
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Well I got 182,000 miles out of it before something wore out, so I am a lucky guy...but the cam and lifters have gone bad in my 2012 Ram truck. I priced the parts today, $1200 worth without labor. Any tricks or tidbits I need to know about before I tear into this thing?

Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2486292
04/22/18 02:32 AM
04/22/18 02:32 AM
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For that much, I think I'd look for a low mileage engine and swap it. I paid 1250 for one with 5k last year.

I take it most of that cost is the lifters, didn't think cams were that expensive. You could swap in a 6.4 cam, they only cost 65 or so direct from mopar. Just not sure how they work with the active intake.


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Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2486316
04/22/18 06:55 AM
04/22/18 06:55 AM
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Originally Posted By AeroMonte
Well I got 182,000 miles out of it before something wore out, so I am a lucky guy...but the cam and lifters have gone bad in my 2012 Ram truck. I priced the parts today, $1200 worth without labor. Any tricks or tidbits I need to know about before I tear into this thing?


PM Hot Rod Dave,


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Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2486860
04/23/18 03:27 PM
04/23/18 03:27 PM
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the problem with a used engine is you don't know about those lifters either (the lifter quits rolling and eats the cam, it is the lifter that goes bad and ruins the cam). I have seen them go bad as low as 100,000 miles even with good maintnance.

I would buy a 6.4 automatic cam, cost me $68 from dodge dealer ($109 cheaper than the actual 5.7 cam and a much better cam), a new set of valve springs $50 from dodge dealer or better yet the actual 6.4 springs are $200 ish and drop right in. A headgasket set from autozone is a couple hundred and check all the lifters by rolling them on a piece of glass to see if they are still rolling nice and smooth, replace any questionable ones.

The lifter and valve springs are the only consistant issue I have seen with the eagle 5.7, the short blocks and heads still look nearly new at 300,000 with good maintnance. I seen one broken rod (and 2 bent ones in the same mordor) but it was hydrolocked running through a giant puddle.


I am not causing global warming, I am just trying to hold off a impending Ice Age!



Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2486864
04/23/18 03:45 PM
04/23/18 03:45 PM
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I'm not saying buy a high mileage engine. The prices on the 09 up engines I find are lower than the early engines. I paid 1250 for one with 5k mile locally, verified mileage, not some craigslist deal. I see many in the below 50k range for 1500ish.

If a cam is tore up, then there is metal shavings in the engine also. I would be checking bearings, which means new rod bolts etc. So many torque to yield bolts on these engines that need replaced. Head bolts, rod bolts and so on. I'd also replace the oil pump, timing set etc.

Add up the cost to go through that engine vs a low mileage engine you can drop in, doesn't even make sense to rebuild it. If it was an earlier engine, that's another story. Low mileage ones are pretty non existence and when you find one they are 2500-3k

No way I'd put any of those lifters with a 178k back in the engine if they check good or not. Unless you want to do this again soon. I also wouldn't risk the chance that metal shavings got into the oiling system and bearings and end up with a rod knock.

Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2486902
04/23/18 05:22 PM
04/23/18 05:22 PM
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I bought a 2009 with a bad cam in tuscon and drove it here and pulled the motor as I was worried about metal shavings but the bearings look brand new with 250,000 miles and at least 2000 miles with a flat lobe. My 2011 had almost 300,000 and same thing, short block, oil pimp... all look like new, you can still see the machine marks in the bearing surface, barely can feel a tiny distortion where the ring ridge would normally be with hone marks all the way to the top. For the price of the 6.4 cam I am going to put one in a junkyard engine any how so I might as well just use what I have. Even on a 50,000 mile used engine I would put on the new springs cam or not, I have seen springs break at 50K. If the bottom end had an issue I would buy a brand new not reman shortblock from the dealer for $900 instead of any used engine I didn't personally know the complete history, even then that short block is pretty hard to pass up. Drop a 6.4 cam and your old heads with new springs on the new short block for a cheap motor instead of the $1500 used engine.

I have had to completely re-think the way I put engines together for these new hemi engines and even 4.7s VS the old school SB and BBs. Very different issues, valve springs break but the short block never seems to wear out, never seen a stock spring break with a stock cam in any SB or BB S6 2.2... but sure saw worn out short blocks.


I am not causing global warming, I am just trying to hold off a impending Ice Age!



Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2486952
04/23/18 07:59 PM
04/23/18 07:59 PM
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Everyone has their way of doing things I guess. Last one I did that had top end issues, I took the cheap way out and didn't touch the bottom end and not much later it lost a rod bearing.

Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2486977
04/23/18 09:26 PM
04/23/18 09:26 PM
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AeroMonte Offline OP
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My truck has had a tick for over 100,000 miles. The dealer mechanic said all hemi's have it. The truck still runs but #7 cylinder has developed a miss. Changed the coil pack and plugs and still has an intermittent miss. Check engine light comes on for a bit then goes out. The other day the noise from the engine was loud enough the dealer service manager said he could hear me coming. I think I'll do the 6.4 cam, all lifters and springs just to be safe. I'm religious about 3-4 thousand mile oil changes but this time I changed to synthetic oil and that may not have been a good thing.

Re: 2012 5.7 cam and lifters bad [Re: HotRodDave] #2487058
04/24/18 12:15 AM
04/24/18 12:15 AM
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Originally Posted By HotRodDave
If the bottom end had an issue I would buy a brand new not reman shortblock from the dealer for $900 instead of any used engine I didn't personally know the complete history, even then that short block is pretty hard to pass up.



Do you have a part number for the $900 shortblock? Thanks

Re: 2012 5.7 cam and lifters bad [Re: camdog440] #2487094
04/24/18 02:13 AM
04/24/18 02:13 AM
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Originally Posted By camdog440
Originally Posted By HotRodDave
If the bottom end had an issue I would buy a brand new not reman shortblock from the dealer for $900 instead of any used engine I didn't personally know the complete history, even then that short block is pretty hard to pass up.



Do you have a part number for the $900 shortblock? Thanks


Here is a link to East Coast Moparts for the part number:

https://www.eastcoastmoparts.com/oem-parts/mopar-short-block-68061157ac/?

Last edited by RTSrunner; 04/24/18 02:15 AM.
Re: 2012 5.7 cam and lifters bad [Re: RTSrunner] #2487518
04/24/18 09:59 PM
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Originally Posted By RTSrunner


Here is a link to East Coast Moparts for the part number:

https://www.eastcoastmoparts.com/oem-parts/mopar-short-block-68061157ac/?



I should have done gen3 instead of big block.

Re: 2012 5.7 cam and lifters bad [Re: camdog440] #2490638
05/01/18 09:13 PM
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Originally Posted By RTSrunner


Here is a link to East Coast Moparts for the part number:

https://www.eastcoastmoparts.com/oem-parts/mopar-short-block-68061157ac/?


When I checked on this part number at my dealership I was told that i is no longer available. Is there replacement P-number maybe?

Thanks

Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2492222
05/04/18 11:32 PM
05/04/18 11:32 PM
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AeroMonte Offline OP
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I think I'll go with HotRodDave and his recommendation. That 6.4 cam with new springs and lifters sounds like the plan. One stupid question though...my VVT will still function correct? My truck is a 2012 1500 4x4 that gets used a lot.

Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2492322
05/05/18 08:00 AM
05/05/18 08:00 AM
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Originally Posted By AeroMonte
I think I'll go with HotRodDave and his recommendation. That 6.4 cam with new springs and lifters sounds like the plan. One stupid question though...my VVT will still function correct? My truck is a 2012 1500 4x4 that gets used a lot.


Good choice............. yes the VVT will still function as intended. I do recommend having someone tune it afterwards to take advantage of the new cam.


Truth has no agenda, but those with an agenda make their own truth.
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Re: 2012 5.7 cam and lifters bad [Re: AeroMonte] #2492331
05/05/18 09:27 AM
05/05/18 09:27 AM
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AeroMonte Offline OP
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Thank you. Anything else I need to consider before I buy parts? Is there a certain year 6.4 cam that is better?

Re: 2012 5.7 cam and lifters bad [Re: camdog440] #2500992
05/27/18 01:37 PM
05/27/18 01:37 PM
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Originally Posted By camdog440
Originally Posted By RTSrunner


Here is a link to East Coast Moparts for the part number:

https://www.eastcoastmoparts.com/oem-parts/mopar-short-block-68061157ac/?


When I checked on this part number at my dealership I was told that i is no longer available. Is there replacement P-number maybe?

Thanks


Try contacting East Coast Moparts directly,might be worth a shot.







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