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5.7 engine with 6.4 SRV intake manifold, cam ???

8K views 6 replies 3 participants last post by  Hemissary 
#1 ·
Just messing around on inter-webs, I found Mopar factory cam #
p/n 53022263AF
Summit has this as a ram, 5.7 VVT,MDS, and SRV, factory replacement cam.
So my question would be if my 5.7 Charger R/T has a 6.4 SRV intake manifold(or even the truck SRV intake) would this cam with its profile for the SRV work better then the stock cam in my 2016?(
p/n 53022372AA I think, as this is car VVT, MDS cam)

I have heard from many tuners the stock 6.4 VVT MDS cam, just doesn't that work well in a 5.7, I have been told gives up too much torque.
I want this cam (the stock 6.4 scat vvt,MDS, cam)to work well in a 5.7 as it is cheap, but a bunch of people I trust say no.

Anyway has anyone done this Ram VVT/MDS/SRV cam swap on an R/T, running a 6.4 SRV intake?
 
#2 · (Edited)
Here is a factory cam info from "5.7 Hemi ANATOMY:

1. The Challenger with a manual transmission uses a p/n 53022064BD that has one groove machined in the barrel, tight against the rear journal, along with 064BD on the back side of it. It's a performance grind that has VVT, but it doesn't have MDS because that requires a torque convertor that can be momentarily unlocked to absorb the torque spike that occurs when the four disabled cylinders are reactivated.
2. The 2500 and 3500 trucks use p/n 53022314AD that has one groove machined in the middle of the barrel that's in front of the rear journal and 314AD stamped on the back of it. It's a truck cam that has VVT, but it doesn't have MDS because the 3/4 ton and 1 ton trucks aren't required to meet the federal CAFE fuel economy standards like the 1/2 ton trucks, so fuel economy isn't an issue.
3. All of the 1500 pickups came with a p/n 53022263AF cam that has 263AF on the back of the journal, but there isn't a groove in the barrel. This cam was also used for the '09-'10 Aspen and Durango, except for the hybrids. It includes VVT, MDS and SRV - the short runner valve - for the active intake, so it has a very sophisticated profile.
4. The fourth cam fits all the cars and Jeeps with automatic transmissions along with the new Durango that was based on the Grand Cherokee platform starting in 2011. It's a p/n 53022372AA that has one groove machined all the way forward on the barrel in front of the journal and 372AA stamped on the back of the journal. This one has VVT and MDS
.
5. The last one is for the Aspen and Durango hybrids that were built in limited numbers in 2009. It's supposed to be a p/n 53022065BE, but it came up as a discontinued number when we ordered it, so all we know is that it probably has 065BE stamped on the back of the rear journal. According to one of the articles we found on these vehicles, the hybrid engines came with "a modified version of the cam
for a passive intake with MDS," but it's definitely not the same as any of the other cams
 
#4 ·
I've got a cam and springs from a 2017 Ram 6.4 BGE, 6 mile on eng when pulled. Put in a SRT cam with MOPAR HP springs before eng went in car.
 
#5 · (Edited)
The SRV intake manifold can be seen as independent of other components. In simple terms the resonance created during long runner mode (lower rpm) and short runner mode (higher rpm) are present anyways.

However, the more aggressive the camshaft profile, the greater the HP / TQ gains the SRV manifold generates (given the same principles are at play, the same can be said about long tube headers).

Edit: with so many very efficient camshaft profiles, much more efficient than what was created early on in the game, folks are way better off choosing amongst those than any OEM unit.
 
#6 ·
Thanks Hemissary, I was thinking if Chrysler thought it worth while to make a cam profile with a SRV intake in mind, it must be worth something? There goal with the 5.7 truck engine and SRV, is different then mind in my R/T, lol.


I guess it would be interesting to know what the SRV "Profile" is, and how it differs from the non SRV one, and if other cam makers are keeping this in mind when they design cams?(or maybe its a lot of work for little to no gain???)
 
#7 · (Edited)
Thanks Hemissary, I was thinking if Chrysler thought it worth while to make a cam profile with a SRV intake in mind, it must be worth something? There goal with the 5.7 truck engine and SRV, is different then mind in my R/T, lol.

I guess it would be interesting to know what the SRV "Profile" is, and how it differs from the non SRV one, and if other cam makers are keeping this in mind when they design cams?(or maybe its a lot of work for little to no gain???)
I doubt the profile is geared towards SRV functionality, remember the camshaft must function over the entire operating range. For sure, the truck camshaft's profile (if different than car platform) is going to designed / biased towards low end torque...given what the platform is designed for.
 
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