Re: MDS CAM IN A NON MDS MOTOR
[Re: TRMN8TER]
#3203385
01/09/24 10:30 AM
01/09/24 10:30 AM
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JohnRR
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I have a 2013 SRT that ate the camshaft up. Its a Non MDS motor. I bought the new lifters and camshaft from the dealer. The camshaft they sent me is for a MDS motor. Can I use that cam? The lifters are non mds as they should be.
Thanks Sounds like the dealer gave you the wrong cam, I didn't think any SRT engine was MDS ??? Might want to ask this is the Gen3 Hemi forum also?
running up my post count some more .
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Re: MDS CAM IN A NON MDS MOTOR
[Re: JohnRR]
#3203688
01/10/24 08:20 PM
01/10/24 08:20 PM
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Joined: Sep 2014
Posts: 1,404
Central Pa
moparjim79
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I have a 2013 SRT that ate the camshaft up. Its a Non MDS motor. I bought the new lifters and camshaft from the dealer. The camshaft they sent me is for a MDS motor. Can I use that cam? The lifters are non mds as they should be.
Thanks Sounds like the dealer gave you the wrong cam, I didn't think any SRT engine was MDS ??? Might want to ask this is the Gen3 Hemi forum also? Incorrect, they did.
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Re: MDS CAM IN A NON MDS MOTOR
[Re: moparjim79]
#3203781
01/11/24 09:56 AM
01/11/24 09:56 AM
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JohnRR
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I have a 2013 SRT that ate the camshaft up. Its a Non MDS motor. I bought the new lifters and camshaft from the dealer. The camshaft they sent me is for a MDS motor. Can I use that cam? The lifters are non mds as they should be.
Thanks Sounds like the dealer gave you the wrong cam, I didn't think any SRT engine was MDS ??? Might want to ask this is the Gen3 Hemi forum also? Incorrect, they did. Thanks for that correction , so what would be different between an MDS cam and a non MDS cam if it's the lifters that are different , or are the SRT engines that were MDS and others that were not but usedthe same cam specs ?
running up my post count some more .
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Re: MDS CAM IN A NON MDS MOTOR
[Re: moparjim79]
#3207117
01/22/24 10:44 AM
01/22/24 10:44 AM
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JohnRR
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MDS lifters were the difference I understand that but isn't the SRT engine about 80HP more than the standard Hemi ? What gives the extra 80 HP if they use the same cams ?
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Re: MDS CAM IN A NON MDS MOTOR
[Re: fbs63]
#3207647
01/23/24 09:33 PM
01/23/24 09:33 PM
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Central Pa
moparjim79
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I'm pretty sure the cams are not the same. Compare the part numbers. I thought this was gonna come up and doubted myself for a second, but no, its the same part number. PN#5038419AB. That came up for his year challenger, charger, jeep, and a 2016 challenger, charger, jeep with a 6.4. Thats from mopar parts direct. If I'm wrong, I'll eat crow, but I'm pretty darn sure the cams are the same and the lifters and the mds actuators are the difference, amongst other small nuances.
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Re: MDS CAM IN A NON MDS MOTOR
[Re: moparjim79]
#3209618
01/31/24 06:17 PM
01/31/24 06:17 PM
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Kalispell Mt.
HotRodDave
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There is cams for both mds 6.4SRT8 and non mds cams for srt8 they are almost the same and both will perform basically the same if used in an engine without mds. You do not want to put a non mds cam in an engine with mds though. They were all rated at or near 485hp.
There is also a truck 6.4 cam that is a little smaller and it has mds and the whole engine is down about 75 hp because it has lower compression pistons, worse exhaust and the smaller cam. They came with mds in 2500 and 3500 rams.
The only one I am not sure about is in the trucks bigger than 1 ton, there may be a non mds cam for them.
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Re: MDS CAM IN A NON MDS MOTOR
[Re: HotRodDave]
#3209891
02/01/24 09:50 PM
02/01/24 09:50 PM
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Joined: Sep 2014
Posts: 1,404
Central Pa
moparjim79
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There is cams for both mds 6.4SRT8 and non mds cams for srt8 they are almost the same and both will perform basically the same if used in an engine without mds. You do not want to put a non mds cam in an engine with mds though. They were all rated at or near 485hp.
There is also a truck 6.4 cam that is a little smaller and it has mds and the whole engine is down about 75 hp because it has lower compression pistons, worse exhaust and the smaller cam. They came with mds in 2500 and 3500 rams.
The only one I am not sure about is in the trucks bigger than 1 ton, there may be a non mds cam for them. Dave, I consider you the go to guy for these engines. With that being said, please post the cam part numbers to clarify for everyone.
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Re: MDS CAM IN A NON MDS MOTOR
[Re: HotRodDave]
#3212174
02/09/24 11:53 AM
02/09/24 11:53 AM
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JohnRR
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There is cams for both mds 6.4SRT8 and non mds cams for srt8 they are almost the same and both will perform basically the same if used in an engine without mds. You do not want to put a non mds cam in an engine with mds though. They were all rated at or near 485hp.
There is also a truck 6.4 cam that is a little smaller and it has mds and the whole engine is down about 75 hp because it has lower compression pistons, worse exhaust and the smaller cam. They came with mds in 2500 and 3500 rams.
The only one I am not sure about is in the trucks bigger than 1 ton, there may be a non mds cam for them. I'm not up on the Gen 3 at all and didn't know that the 2013 was a 6.4 , I was thinking 5.7 so thanks for the clarification . I'll go back to lurking now 
running up my post count some more .
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