4.7 Vs. 5.2 (318)
BTW, I never said the 5.2 was "better". I disagreed that it was impractical. Having nothing but a boat for transportation when you live in the Sahara desert is impractical. Owning a Prius when you have a family of 12 is impractical. Owning a truck that has the previous generation of engine but does everything the newer ones doesn't isn't impractical.
Seriously, though, if you just joined this forum to argue with everybody and see how many people you can **** off, don't bother. This isn't that kind of a place. You might try Pirate 4x4.
Last edited by Tom A; Jul 23, 2013 at 09:50 PM.
More cost effective to have a fleet accounts setup directly with the manufactures. Vehicles on a two or three year rotation depending on its use and function. So no, I don't turn wrenches. I just read the numbers. Database pulls up service records, total costs, dates, locations, ect.
And I didn't come to argue. You just don't like my answer. This thread was about 5.2 vs 4.7. I think 4.7 wins over the 5.2. But you don't like that.
Both motors produce roughly same power numbers but the win win is the 4.7 gets slightly better mpg. That's a win in my book.
More cost effective to have a fleet accounts setup directly with the manufactures. Vehicles on a two or three year rotation depending on its use and function. So no, I don't turn wrenches. I just read the numbers. Database pulls up service records, total costs, dates, locations, ect.
Ours are on a 10+ year rotation, which tends to show how durable they are or aren't. And FWIW, I don't turn wrenches anymore, either.
I'm done here now. We can just agree to disagree.
I'm sure I don't have to tell you that you can probably drive just about any new vehicle for 2-3 years without major problems, even if you don't so much as change the oil.
Ours are on a 10+ year rotation, which tends to show how durable they are or aren't. And FWIW, I don't turn wrenches anymore, either.
Ours are on a 10+ year rotation, which tends to show how durable they are or aren't. And FWIW, I don't turn wrenches anymore, either.
Personally I think it's ridiculous. You figure about $30k per truck (that vehicle class) in such a large volume rotated out every 2-3 years? I have some vehicles a year old with only 3k miles on them. But hey, some accountant somewhere seems to think its cheaper this way. Which may be because you're auctioning off vehicles with 10k-120k miles which means some cash back. Vs holding on and dumping at 120k-220k (or 300k on diesels)
Last edited by PublicHair; Jul 23, 2013 at 10:14 PM.
Actually, I don't really care. If I want a truck with a 4.7, I'll buy one. I like mine, so I'll keep it. You like yours, so keep it. It makes no difference to me. The difference is that you're talking smack about the 5.2 and I haven't said anything bad about the 4.7, other than that I, personally, have seen more of them with problems than I've seen 5.2s.
I'm done here now. We can just agree to disagree.
I'm done here now. We can just agree to disagree.
Now I'm a fan of the 5.9 and I wanted a durango with the 5.9 but when buying a vehicle used for your dog.. You really can't just spend months looking for a PS4 SLT Plus durango with AWD and 5.9
I don't think the debate will ever be settled. People just have different needs and wants that will be satisfied by different engines. Personally I love my 4.7. I like the slight MPG improvement, I like that I only ever have to deal with spark plugs, as it has no wires or distributor, and most importantly I think the transmission is the biggest advantage it has. My 2001 Durango came with the TCM programmed to just use it as a 4 speed, but I did the Grand Cherokee TCM upgrade which now let the trans. use the 5th second overdrive gear, increasing my MPG still a bit more. I get up to 23MPG on the highway with the cruise control set. I also would say that the 545RFE is a bit tougher (its what they use with the HEMI engines, so it can take a lot of torque thru it) and it doesn't have any bands to deal with. I noticed that there is a slight difference between my parents' 99 with the 5.2 and my 4.7, mine seems to have a slight bit more pickup when I stomp on the gas than theirs, I think its more of a transmission difference, and the second prime gear that the (5)45RFE uses for downshifting, and being a full electronic trans it does seem to just be more responsive and quick with its shifts. I'll never say anything bad about the 5.2, its a great engine, plenty of power, great reliability, and is served Dodge trucks very well over the years. Chrysler needed to come up with a new engine primarily to meet new emissions and efficiency expectations and requirements, so the 4.7 was created using newer technology. Both engines have proven to be reliable in my eyes, and I'll never concede that either is more reliable or a better engine, one is just newer, and both have various advantages to different truck owners. If you just want to buy a truck and leave it stock, and just use it for whatever you need, both will serve you fine. I do think that if you want to do a lot of performance upgrades and such, the old 5.2 just has more things available for lower cost, just a fact.


