5.7 Cam changeout, Is there a better RV Cam profile than stock?

[Fast69Mopar]

I see there’s a couple versions of the Crower lifter. Do you know the part number you used?

This is the Crower part number that I use...

66323PH-16

This part number is for a complete set of 16 lifters for $526.06 directly from the Crower website.

 

[Zinger1]

Cam Swap
Hey guys, I'm doing a Cam swap on the same motor but my investigation into this was shown to be a lubrication issue, not at high rpm but at idle. Engines that idled a lot had the quickest and most profound failure. I think they need more pressure at idle and no more than 65 psi. I have a 2015 Ram automatic 5.7L (with a lot of miles)

Oil Pump
So I'm considering using the new Melling 10452 oil pump where you have the option of 65 or 75 pressure. (I'll use 65 cuz have the right oil) I've done a conversion to synthetic in a scientific way although not a nerd or scientist and this is the pump I'll replace to. (I use Penz prem 5-20 due to more consistent larger molecule size, viscosity doesn't break down)

CAM, Springs, Lifters
Re the cam I'm still on the fence and have looked pretty much at everything. An interesting one is the Ram 6.4 cam from the same year that has an automatic trans also so is vvt and mds. I personally like the mds system and it works well with the 3.9 cogs. I've been told I should replace the springs and shim them right, but when I look up the springs they appear to be the same on both engines so other than checking them for damage or weakness why do I need to change them? I'm not clear on that one and I hear lots of people talking about the "bind" issue and I don't see why there could be any problem cuz they're the same springs? I think they are assuming they need higher performance springs due to the higher lift, but if the springs are the same what's the issue? I'll probably use Melling lifters, have a pretty good record.

Truck Use and Cam Decision
I have similar use to yours & I'd like to hear what cam you're trending to or if you've made a decision. I tow a camper occasionally and use as a work truck as well as around town. I've seen the dyno result on the 392/6.4 cam compared to the stock 5.7 cam and it's impressive on the torque (starting lower and being higher always) as well as being well above the 5.7 across the graph and actually going up still until over 6k on hp. You can gain torque as well as hp and have a cam that should be compatible with the computer without a tune, no vvt block and maintain the mds. How sweet is that!!!

I need to make a decision pretty quick tho, mine's missing badly and it's not a coil or anything else and still drives but I want to limit the damage!

 

[Red Deer Ram]

Finally back to dealing with my Cam and Lifters overhaul. I have ordered a set of Johnson lifters, still not sure which cam I will purchase as the stock cam profile works pretty good for my application (towing). Any advice here would be useful... I am leaning towards the Comp Cans NSR Stage 1 HRT 216/222 Hyd, Roller Cam. Has anyone used this profile before? The truck tows and is a daily driver...

 

[Red Deer Ram]

This is the Crower part number that I use...

66323PH-16

This part number is for a complete set of 16 lifters for $526.06 directly from the Crower website.

Thanks, the only problem is they are sold out everywhere, and Crower says up to 90 days before shipping... I ordered a set of Johnson's... I have to get this done...

 

[Red Deer Ram]

Cam Swap
Hey guys, I'm doing a Cam swap on the same motor but my investigation into this was shown to be a lubrication issue, not at high rpm but at idle. Engines that idled a lot had the quickest and most profound failure. I think they need more pressure at idle and no more than 65 psi. I have a 2015 Ram automatic 5.7L (with a lot of miles)

Oil Pump
So I'm considering using the new Melling 10452 oil pump where you have the option of 65 or 75 pressure. (I'll use 65 cuz have the right oil) I've done a conversion to synthetic in a scientific way although not a nerd or scientist and this is the pump I'll replace to. (I use Penz prem 5-20 due to more consistent larger molecule size, viscosity doesn't break down)

CAM, Springs, Lifters
Re the cam I'm still on the fence and have looked pretty much at everything. An interesting one is the Ram 6.4 cam from the same year that has an automatic trans also so is vvt and mds. I personally like the mds system and it works well with the 3.9 cogs. I've been told I should replace the springs and shim them right, but when I look up the springs they appear to be the same on both engines so other than checking them for damage or weakness why do I need to change them? I'm not clear on that one and I hear lots of people talking about the "bind" issue and I don't see why there could be any problem cuz they're the same springs? I think they are assuming they need higher performance springs due to the higher lift, but if the springs are the same what's the issue? I'll probably use Melling lifters, have a pretty good record.

Truck Use and Cam Decision
I have similar use to yours & I'd like to hear what cam you're trending to or if you've made a decision. I tow a camper occasionally and use as a work truck as well as around town. I've seen the dyno result on the 392/6.4 cam compared to the stock 5.7 cam and it's impressive on the torque (starting lower and being higher always) as well as being well above the 5.7 across the graph and actually going up still until over 6k on hp. You can gain torque as well as hp and have a cam that should be compatible with the computer without a tune, no vvt block and maintain the mds. How sweet is that!!!

I need to make a decision pretty quick tho, mine's missing badly and it's not a coil or anything else and still drives but I want to limit the damage!

I'm sticking with the stock springs, likely this Cam: Comp Cans NSR Stage 1 HRT 216/222 Hyd, Roller Cam, and a set of Johnson lifters...

 

[DILLIGAF]

Stock 5.7 springs are a joke compared to the PSIs. Why would you spend all this money and cheap out at the most important part.

 

[Red Deer Ram]

Stock 5.7 springs are a joke compared to the PSIs. Why would you spend all this money and cheap out at the most important part.

View attachment 478210

I‘m not looking for high performance as the truck is a daily driver. Even the cam I’m considering is mild, mainly an improvement in the torque band. I wasn’t aware of valve spring failure on the Hemi. I’m not opposed to changing out springs, my truck has 110 kms on it. I haven’t heard of PSI springs before. Thanks

 

[Red Deer Ram]

Stock 5.7 springs are a joke compared to the PSIs. Why would you spend all this money and cheap out at the most important part.

View attachment 478210

So I dug in and decided to freshen up the heads. I wasn’t able to go with PSI but went with a Comp Cams kit that should work with the Stage 1 Cam. Thanks for making me think about it!

 

[Red Deer Ram]

As @crackerjack1957 said, I recommend, install and personally use Johnson Lifters. I have use the Johnson ST2356 Short Travel w/ Axle Oiling many times with great results. I use this lifter on majority of the HEMI's that will see alot of track duty. I can normally get these lifters from Johnson for $775.00 but a couple of other places are in the $775-$825 price range.

I have also had some solid results from the Crower HEMI lifters. I have been using this lifter for about a year now in my street motors and have not experienced a single failure or any type of lifter noise. I have two motors that I built 6 months ago that see 100% track duty and 8200rpm shifts and these have performed flawlessly.
Crower P/N: 66323PH-16 $526.06

In the grand scheme of things I believe this is a small price to pay when it comes to the longevity and reliability of my motors. I have had too many Mopar lifters make noise and collapse and it gets old pulling the heads off of the same motor over and over just to change out the lifters.

Thanks for the recommendation, I did purchase a set of the 2356 drop in’s. I do have a question… do you face the oiling hole in a specific direction/position front or back? I can’t imagine it makes a difference but I certainly don’t want to be wrong
thanks!