Hemi or cummins?

[derekp]

Okay I need some opinions. Now I currently drive an 07 lifted 2wd with a 4.7L that has damn near 200,000 miles on the motor. Most of you don't know this but my family owns a salvage yard. In the yard currently I have a 94 12 valve cummins that has everything there the truck was just hit real hard in the ass. I also have an 05 hemi hit the same way so everything is also there. I am going to transplant one of these drive trains into my truck.

Before you tell me to go out and just buy one dont, I don't do things that way. I like to build everything I have myself.

So which would you do? The hemi would be easiest and I could probably do everything in a weekend. Everything would line up and bolt right up, same ac setup and everything else. The cummins is also doable, I've seen it done. However, I would have to transplant fuel tank and pump as well as a few other things. Not to mention probably reinforce the frame a bit and build new motor mounts.

If I want my truck back quickly, I could do the hemi, which would be nice to have. The cummins though I think would be bad freakin ass. It would really make this truck one of a kind. My gut says hemi but my heart says cummins...

I need some input. All opinions welcome. Couple pics of my truck for fun...

 

[Joshwaa]

I think you would also have to think about front suspension for the weight. My vote would be for the Hemi. Nice looking Truck BTW.

 

[fordtech90]

If you think your capable of doing it, I'd go Cummins all the way. It would be a beast


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[DarthMegaHD]

Hemi

 

[MarkV]

I think you would also have to think about front suspension for the weight. My vote would be for the Hemi. Nice looking Truck BTW.

I would second him on the front weight of a Cummins. It would probably be to heavy. But if you do do it. It would be a very sweet truck!!!!

 

[R/T_Fire]

I'm a huge fan of the cummins, but in this case... Hemi your whole suspension system would fail under the weight of the cummins, and if your going to go through that much trouble and cost you might as well go buy a 3rd gen 4x4 cummins.

But with all that I would look at selling the other parts and get a hold of a 4th gen power plant and drivetrain. 8speed and 5.7 I think would make a much better swap.

 

[strmtrooper]

Cummins, if you have the ability and the tools why not? Dont have a 4bt in the yard?

 

[SilverStreak88]

There's a member here that did a 12V swap in a SCSB, there was a little more entailed than just swapping mounts and all the stuff to make it run, but it's been done (without) suspension modification.

P.S.: It'll be cheaper and easier to buy it over swapping everything.

 

[R/T_Fire]

There's a member here that did a 12V swap in a SCSB, there was a little more entailed than just swapping mounts and all the stuff to make it run, but it's been done (without) suspension modification.

P.S.: It'll be cheaper and easier to buy it over swapping everything.

Exactly, The gain is not worth the cost. and that's coming from a guy that will redo something just cause I don't like how it looks. I've done some swaps and there is a lot more than one would think... a lot of reworking of the harness, gauges etc etc. It is def not a novice type job and definitely takes some strong knowledge, patience and $$$$$

But again your front susp will fail as that motor is more than twice the weight fully dressed. you will need to factor in all of that work too

 

[blackbeautyhemi]

Yea I'd do the hemi. It has plenty of power and would be much easier than the
Cummins. Plus maintaining and mods for a hemi are cheaper and more reasonably priced than for a diesel.

 

[SilverStreak88]

Exactly, The gain is not worth the cost. and that's coming from a guy that will redo something just cause I don't like how it looks. I've done some swaps and there is a lot more than one would think... a lot of reworking of the harness, gauges etc etc. It is def not a novice type job and definitely takes some strong knowledge, patience and $$$$$

But again your front susp will fail as that motor is more than twice the weight fully dressed. you will need to factor in all of that work too

I was merely joking with him about it, but he does have everything do the swap and could be/has been done, but I did forget about harness splicing. There's a guy over on the Expedition Portal that turned a brand new E-350 into an Overlanding rig - what a beast, but he did a 6.7C swap and stripped the OEM harness and splicing for days to curtail to the Cummins.

 

[SilverStreak88]

All I'll say is, man, if you wanna do it go for the big C, but the best option for suspension and ease of transition would be the HEMI, I prefer the 05 version over my 07.

 

[R/T_Fire]

I was merely joking with him about it, but he does have everything do the swap and could be/has been done, but I did forget about harness splicing. There's a guy over on the Expedition Portal that turned a brand new E-350 into an Overlanding rig - what a beast, but he did a 6.7C swap and stripped the OEM harness and splicing for days to curtail to the Cummins.

Oh its possible, and he if has the skills he knows what he is in for.
Craziest 12v swap I have seen a friends shop do was a chrysler new yorker..... so yes anything is possible.

 

[Hemipower392]

Listen to your heart, give it the cummins it wants

 

[derekp]

I appreciate all the input guys. I do believe it is possible. There is about a 600 lb difference between the two motors fully dressed. I have already put bigger coils in the truck with the lift I have my issue would be with the rear end. lt might be okay as long as I don't go to a truck pull or something with the truck. A 4bt I considered as well and would hold under the suspension a lot better but I don't want to hear the truck with a higher pitch wine like a turbo ricer. We will see. I'm still deciding what route to take. I have both trucks already so money isn't the issue, time is.

 

[SilverStreak88]

I appreciate all the input guys. I do believe it is possible. There is about a 600 lb difference between the two motors fully dressed. I have already put bigger coils in the truck with the lift I have my issue would be with the rear end. lt might be okay as long as I don't go to a truck pull or something with the truck. A 4bt I considered as well and would hold under the suspension a lot better but I don't want to hear the truck with a higher pitch wine like a turbo ricer. We will see. I'm still deciding what route to take. I have both trucks already so money isn't the issue, time is.

Nah, just weld everything in place... what could possibly go wrong then.

 

[R/T_Fire]

Honestly I would go with the 6bt over the 4bt, a lot more power possibilities with the 6bt. most I've heard of out of a 4bt is about 4-500hp and thats screaming.... twin set up on a 12v and you can make some serious power.

Is the 12v motor you have a p-pump or VE pumped motor?

 

[ST-8]

I would do the hemi, I'd imagine making everything else work with the cummins would be a real time consuming pain in the ass. Power windows, locks, gauge cluster, cruise control that kind of stuff.

 

[derekp]

Honestly I would go with the 6bt over the 4bt, a lot more power possibilities with the 6bt. most I've heard of out of a 4bt is about 4-500hp and thats screaming.... twin set up on a 12v and you can make some serious power.

Is the 12v motor you have a p-pump or VE pumped motor?

It's a p pump. I just like the idea of that year because it is mechanical, very little electrical involved.

 

[derekp]

I would do the hemi, I'd imagine making everything else work with the cummins would be a real time consuming pain in the ass. Power windows, locks, gauge cluster, cruise control that kind of stuff.

Well the bcm and the ecm are different so some things wouldn't change. You're right on the cluster, cruise control, and things like that. I'd have to either figure it out or just delete it. The cluster would take some figuring out though.