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#2418290 - 12/13/17 10:16 PM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
WO23Coronet Offline
master

Registered: 01/08/08
Posts: 4038
Loc: Canada
Awesome update. I have a friend with a '10 Ram QCSB 4x4 that wants to do a cam and is leaning towards the SRT one. His truck is pretty fast as it is (LT headers/Y pipe, mbrp exhaust, Mopar Ram Air hood, tuner, 3.92 gears)) but it sounds like the SRT cam would be a nice addition.

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#2418551 - 12/14/17 02:03 PM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
HotRodDave Offline
master

Registered: 01/29/05
Posts: 9765
Loc: Kalispell Mt.
Sure beats the $1000 plus you will spend on an aftermarket cam after you buy the incredibly over priced cam, the over priced phaser limiter, a tuner to keep the CEL off... With mods like he has the gains should be even more drastic. This truck barely seems noticably less TQ at low RPM power with a fat jump as the RPM goes up, no tuner or anything. It is still happy even loafing down the road @70mph under 2000rpm.
_________________________
I am not causing global warming, I am just trying to hold off a impending Ice Age!

68 cuda 360 notchback SOLD

1996 Ram 2500 5.9 eddy intake EQ heads, mild cam upgrade great tow rig!


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#2418896 - 12/15/17 06:44 AM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
ric3xrt Offline
super stock

Registered: 01/13/06
Posts: 1091
Loc: Trumbauersville PA
Originally Posted By HotRodDave
Sure beats the $1000 plus you will spend on an aftermarket cam after you buy the incredibly over priced cam, the over priced phaser limiter, a tuner to keep the CEL off... With mods like he has the gains should be even more drastic. This truck barely seems noticably less TQ at low RPM power with a fat jump as the RPM goes up, no tuner or anything. It is still happy even loafing down the road @70mph under 2000rpm.


Total agreement,
My low end was noticeable when I had a load in the bed and I think that was because my truck has 3.55s in it. with the Higher ratio's I don't think it'll be as noticeable. and if you get a tune ....that will wake it up a LOT.
I loved the cam swap and if I ever put a 5.7 back in the truck it will have the SRT cam in it.

I tell any one who will listen if you have a VVT 5.7 put the 392 cam in it, you will not regret it.
_________________________
Truth has no agenda, but those with an agenda don't always acknowledge truth
74 D100 D-Code,3x75 D100 D-code, 3x77 D100 D-code,6x78 D150 D-D-code...lots of pre 81 trucks
75 4x2 Ramcharger....G3 coming soon
2003 Ram st
2004 Rumble Bee
2004 Ram GTX(Plum Crazy)
2005 Ram GTXtreme(s Plum Crazy,Banana Yellow)
Any info on these trucks is greatly appreciated
2005 Ram 1500 (drag truck in building)
2014 1500 tradesman(shhhh, it's hiding a 7.0 short block under those eagle heads.

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#2420814 - 12/19/17 12:45 AM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
RTSrunner Offline
pro stock

Registered: 11/03/03
Posts: 1343
Loc: Pittsburgh,PA
Originally Posted By HotRodDave
Sure beats the $1000 plus you will spend on an aftermarket cam after you buy the incredibly over priced cam, the over priced phaser limiter, a tuner to keep the CEL off... With mods like he has the gains should be even more drastic. This truck barely seems noticably less TQ at low RPM power with a fat jump as the RPM goes up, no tuner or anything. It is still happy even loafing down the road @70mph under 2000rpm.


Dave,Is this installed at factory specs using n OEM timing set? IE: no advancing of the cam timing for the smaller displacement engine?
RT

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#2420988 - 12/19/17 01:10 PM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
HotRodDave Offline
master

Registered: 01/29/05
Posts: 9765
Loc: Kalispell Mt.
I pulled the cam and installed it exactly how the FSM would tell you to do it with all factory parts except with a different part number cam.

If your truck is fully functional you could pull the timing cover, valve covers and rockers, spin the cam to lift all the lifters out of the way and swap cams without even pulling heads (if you are swapping cams because of a flat cam you need to pull the heads to replace lifters). The only parts you would have to buy (on a properly running truck/car) would be a tube of rightstuff to reseal the timing cover and the cam. The valve cover gaskets are usually totally re-useable as is the timing cover gasket with some right stuff in the corners for safety. The water pump don't even need removed from the timing cover. If you pull the drain plugs on the side of the block and drain the radiator you would not even have to change the oil and you could re-use the antifreeze, if you don't pull the drain plugs you will get some water in the oil when you remove the timing cover.

I did cheat a little, I stuck the handle of a 3/8th crapsman ratchet under the crank gear before un bolting the cam phaser to hold the chain in the same place on the crank gear and I marked the cam phaser and chain with a scratch awl so I could be sure they were back in the same place when re-assembled.

I have a dissasembled cam phaser I checked piston to valve clearance with that cam on a motor on the stand I am building with no head gasket and lifters shimmed solid and with the cam advanced all the way nothing touched and with it retarded all the way nothing touched and for good measure I centered it and checked and no pistons feeling up valves there either.

I would recomend new springs as I do see them start breaking ocasionally after about 150,000 miles. I used new 5.7 springs just to see what would happen as they had plenty of spring pressure and clearance and were only like $50 for a set from the dealer.
_________________________
I am not causing global warming, I am just trying to hold off a impending Ice Age!

68 cuda 360 notchback SOLD

1996 Ram 2500 5.9 eddy intake EQ heads, mild cam upgrade great tow rig!


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#2421337 - 12/20/17 05:14 AM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
ric3xrt Offline
super stock

Registered: 01/13/06
Posts: 1091
Loc: Trumbauersville PA
When I did mine, I bought a new Phaser,chain lower sprocket, and tensioners, and gasket kit.......afterwards I found out I didn't need all those extras ..it is as simple as pull cam out replace cam, with the new chain I just lined up the marks, put it all back together , truck took 3 starts to idle, and honestly I was a sh!tIng bricks really thought I'd F'd up the whole thing, but on that 3rd start it idled , and WOOOOOOOOW WHOOOO the fun begain

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#2424221 - 12/26/17 10:35 PM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
EagleDuster Offline
member

Registered: 12/26/17
Posts: 24
Loc: Northern Colorado
Hi guys, this is my first post... I've been on ForABodiesOnly.com for years but just recently got a 2014 5.7 Hemi to swap into my '70 Duster at some point and I'm looking for all the info I can find. Lots to read through in these threads, I actually found this one earlier when I was looking at replacement cams. The engine I got had a cam lobe/lifter failure so it needs a new cam and lifters; initially I thought I'd have to pay out the @$$ for a Comp piece and the phaser-limiter but now I'm just gonna get a 6.4L SRT cam for a non-MDS car. New springs and pushrods too.

One question regarding tuning for the bigger cam, if I get the MP PCM and Harness kit with the unlocked PCM would I be able to tune it myself? Regardless I'm guessing having a custom tune from a modern Hemi specialist would get the best results?


Edited by EagleDuster (12/26/17 10:36 PM)
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Khalid
1970 Plymouth Duster, 1993 Jeep Cherokee 4x4

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#2424428 - 12/27/17 12:47 PM Re: 6.4 SRT cam into 5.7 eagle information [Re: EagleDuster]
HotRodDave Offline
master

Registered: 01/29/05
Posts: 9765
Loc: Kalispell Mt.
push rods are the same, no sense in changing them, the 5.7 springs you have will work, the 6.4 springs may be better, they use the same IH seat diameters and retainers so they drop right in. I did my swap without any tuning or the expensive 6.4 springs and its fine, a definte improvement with no other changes so if you can not change your tune you should still be in good shape. I used a MDS cam because I had already bought it for my 1/2 ton and its great, I doubt youd see 5 hp difference as the changes for MDS are super tiny, I have run MDS on a non MDS cam and it is fine that way also.
_________________________
I am not causing global warming, I am just trying to hold off a impending Ice Age!

68 cuda 360 notchback SOLD

1996 Ram 2500 5.9 eddy intake EQ heads, mild cam upgrade great tow rig!


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#2424562 - 12/27/17 04:34 PM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
EagleDuster Offline
member

Registered: 12/26/17
Posts: 24
Loc: Northern Colorado
Thanks Dave good to know... I'm leaning towards upgrading the springs because this engine will be hooked to a manual transmission and I want to be able to redline this baby and speed-shift without worrying about breaking a spring and dropping a valve. I also mentioned pushrods because the one that was on the failed lifter got bent, guess I can just replace that one and call it good, no use in replacing all of them as a "preventative" measure? This 5.7 has 135k miles on it btw...
_________________________
Khalid
1970 Plymouth Duster, 1993 Jeep Cherokee 4x4

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#2425223 - 12/28/17 11:47 PM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
EagleDuster Offline
member

Registered: 12/26/17
Posts: 24
Loc: Northern Colorado
Anyone happen to know why the non-MDS 6.4 cams are $212 or more as opposed to $68 for the MDS version?

Mopar Camshaft non-MDS 6.4L SRT


Edited by EagleDuster (12/28/17 11:48 PM)
_________________________
Khalid
1970 Plymouth Duster, 1993 Jeep Cherokee 4x4

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#2426017 - 12/30/17 05:18 PM Re: 6.4 SRT cam into 5.7 eagle information [Re: HotRodDave]
kpzbee Offline
super stock

Registered: 01/20/03
Posts: 884
Loc: Wooster, Ohio
Thanks for posting this swap. I read about this before when I was doing research for my 5.7 swap I'm now doing into my Javelin. After seeing this again and doing some more looking, I bought the non MDS cam with PSI springs and Manley retainers for it. For a street car that gets driven a lot I figured this is the best bang for the buck over a custom cam.
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"It's funny how one project eventually leads (or forces) you into another one.
It's really just one endless project designed to induce insanity and bankruptcy."

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