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TexasTodd
Dodge Dakota
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10/21/2005
18:40:53
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 Subject: RE: Is the 4.7 a good engine?
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86,000+miles on my 01, 4.7 QC, manual tranny, etc.
Best engine I've ever owned, do my own Mobil 1 changes ~every 7K, etc. I would have went thru 3 plenum gaskets, etc. with the 5.2.
I'm 45 y/o
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jayb
Dodge Dakota
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10/22/2005
01:06:32
| RE: Is the 4.7 a good engine?
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your overhead cam POS will not outlast the 5.2. guaranteed. there is no advantage to getting the 4.7. torque is the same, but wait! 5 more hp. holy sh!t!!!! 5 hp! the milage is the same. but yet, there are way more after market parts out, and you KNOW the 5.2 has lasted over 30 years. ive read alot of crap on this board, know alot of mechanics, been a mechanic, f'd with alot of trucks. the 4.7 doesnt hold up nearly as long or well as the 5.2L as a truck engine...period.
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hi again jay
Dodge Dakota
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10/22/2005
08:04:41
| RE: Is the 4.7 a good engine?
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Generally when people talk about how long a motor will last, they are talking about a particular motor; not how long that family of motors will last. A 318 built 30 years ago is very different from the 5.2 made today. There is nothing about the location of the cam in the motor that dictates how long the motor will last. Many consider an overhead cam to be a superior design - there are no pushrods to deflect or bend; action is much more direct on the valves. In this respect, the 4.7 is not just a good engine, it is a better design than the 5.2. I toasted a 318 in a truck when the oil pump went bad and the low pressure light failed, it sounded like an exhaust doughnut leak until it bound up. My 4.7 easily bests that 318.
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Stu Baker
Dodge Dakota
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10/31/2005
18:23:33
| RE: Is the 4.7 a good engine?
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2000 Quad Cab 4.7 which I bought w/ 33k on it. Drove it pretty much all hiway for work. Operating temp., non abuse, oil changes etc. Motor blew at 88k..Didn't have the funds for rebuilt ($3500.+) or new ($5900.) through Dodge. Decided to put in a junk yard mtr. then get rid of it. Well, for the same price of the junk yrd mtr I could have bought a rebuilt for the same $ with a 4 yr./ 40k warranty. I went w/ the rebuild for $2400. This is a demonic truck. There is a loooong story to it. Let's just say, used parts or used 4.7's are hard to come by. This happened back in March 05 and to date I still don't have my truck back.
ds
Sandown, NH
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TexasTodd
Dodge Dakota
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10/31/2005
22:59:27
|  RE: Is the 4.7 a good engine?
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Stu,
Did YOU do your OWN oil changes?
That seems to be a factor.
My 01, 4.7, often driven fairly hard, ~87K miles, purrs as good, or better than new. It's needed nothing.
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allpar
Dodge Dakota
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10/31/2005
22:59:41
| RE: Is the 4.7 a good engine?
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"your overhead cam POS will not outlast the 5.2. guaranteed. there is no advantage to getting the 4.7. torque is the same, but wait! 5 more hp. holy sh!t!!!! 5 hp! the milage is the same. but yet, there are way more after market parts out, and you KNOW the 5.2 has lasted over 30 years. ive read alot of crap on this board, know alot of mechanics, been a mechanic, f'd with alot of trucks. the 4.7 doesnt hold up nearly as long or well as the 5.2L as a truck engine...period."
He said it right^
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So What
Dodge Dakota
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10/31/2005
23:09:45
| RE: Is the 4.7 a good engine?
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Well I'm awefully glad we've got some experts here on this website. I'd hate to think that somebody would spout some BS just based upon their own opinions.
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jayb
Dodge Dakota
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11/01/2005
00:51:01
| RE: Is the 4.7 a good engine?
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Generally when people talk about how long a motor will last, they are talking about a particular motor; not how long that family of motors will last. A 318 built 30 years ago is very different from the 5.2 made today. There is nothing about the location of the cam in the motor that dictates how long the motor will last. Many consider an overhead cam to be a superior design - there are no pushrods to deflect or bend; action is much more direct on the valves. In this respect, the 4.7 is not just a good engine, it is a better design than the 5.2. I toasted a 318 in a truck when the oil pump went bad and the low pressure light failed, it sounded like an exhaust doughnut leak until it bound up. My 4.7 easily bests that 318.
either that moron cant drive, or there is something wrong with the 5.2 in his truck. it is a better design? hahaha LMAO!
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GraphiteDak
GenIII
11/01/2005
00:56:14
| RE: Is the 4.7 a good engine?
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I can't believe how dumb ppl get.
I think the 4.7 is UNDER RATED for what it is. Especially the last few years. It for sure has more than 5HP over the 318 BTW. And has 1K RPM's MORE powerband, and almost has MORE torque down low.
Sad to say. But seems to be true.
And I LIKE the 318.
99% of the guys who talk sh*t, never had a 4.7 (287).
My bro in law (2000 5.2) and I have been both modding our trucks. Both have SuperChips, etc. He LOVED the way my truck will just shred the tires from a dead stop with NO hesitation and KEEP spinning and the engine revs to 6500 after SuperChips. His still limited at 5500 AFTER SuperChips. And he's dreading the cam swap. Since it's twice as hard as swapping BOTH cams in the 4.7
Oh yeah. He also FINALLY put in a shift kit into his 46RE. It was a lot of work on that tranny. And it STILL upshifts at 4500 on it's own with the detent cable fully adjusted! It will hold ghears if he holds it though and IS snapping pretty quick. but still no bark of the tires.
I used the SuperChips programmer and got rock hard shifts in 10 minutes. And mine occasional DOES bark the tires. In my 5,000 Lb QC 4X4. He has a 2WD RC Ram.
Now. I'm not saying that the OLD SCHOOL sucks. Just saying that the NEW SCHOOL does not either. And in my opinion, some of the stuff is already better and easier to work on.
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Mikes99Dakota
GenIII
11/01/2005
09:29:41
| RE: Is the 4.7 a good engine?
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Nah to the ground its about 5 hp more I made 179.78 rwhp and my friends dakota made 184.94rwhp
so yah its more than 5 h.p. I have never driven one and I would like to own another v8 dakota. If I ever buy one it wil be the 4.7L then I wil have a great "pushrod" motor and and overhead cam motor. Both motors are great....I just want to see how long the new 4.7L driven right and treated good will last. Prolly just as long as my lil 318.
1999 RC Auto 5.2L
Mopar PPH, Magnaflow 3" w/cut-out, 3.90s/Suregrip, 50mm Fastman TB
Track Times:
9.47 @ 72.21mph
14.89 @ 91.33 mph
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GraphiteDak
GenIII
11/01/2005
12:54:07
| RE: Is the 4.7 a good engine?
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Who knows. The 318 has about the strongest bottom ends of all engines though. You have to be AWEFUL to a 318 to get a rod knock.
The 4.7 DOES run high RPM's. Hopefully the bottom end is as strong. Techknowledgy wise, it supposed to be cross drilled, or some other fancy designs that also usually is done ot modify older engines. It SHOULD be stout. From what they say. But 4 to 5 years time isn't long enough to know.
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Kowalski
GenIII
11/01/2005
16:10:26
| RE: Is the 4.7 a good engine?
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Very true - seems to be a lot of "sour grapes" from the 5.2 guys, just upset the 4.7 is replacing the 5.2 I guess. 4.7 bottom end has a beefy girdle type design.
Lead, follow, or get out of the way
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toolfan
Dodge Dakota
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11/01/2005
21:50:32
| RE: Is the 4.7 a good engine?
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i own the 5.2 and love the fact that the engine never sounds stress at 5000rpm with 152000 miles but the tranny that came with it is another story.
the 4.7 will hopefully last as long as the great 5.2 but the 4.7 design to me is a better design.
i wonder if chevys 350 could outlast the 318 or maybe Fords 351 winser? hmmm i would say the 318 but that just because i own one.
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GraphiteDak
GenIII
11/01/2005
23:37:01
| RE: Is the 4.7 a good engine?
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Both the 318 and 351W were known to outlast Chevy SB. Chevy used softer metal and the narrowest rod and main bearings. If the Chevy didn't throw a rod by 150K, it had a flat cam.
Been there. Done that.
Yeah, the 4.7 DOES have a BED PLATE bottom end.
I just got done arguing with the father in law about my tranny. I told him about gears and all that. And he's telling me (and the wife) I HAVE to run my tranny out of OD when towing or it will cook. Even on the flat, the entire trip.
There aint no way I'm doing that. It would be near 4k at 80MPH instead of 2900 in OD right where the power will be fine.
I tried to tell him the tranny isn't IGNORANT like the past OD ones and that it doesn't HUNT for gears when I tow. And that's with the 3.55's. It should not need to go out of OD with the 4.56 unless I get on a good hill.
The old school old timers sure like to tell people how something NEW works, even when they have never used one. :p
Same thing with how they all say 4.10's would trash MPG when most 4.7 guys said it HELPED MPG all around. I realize the 4.56 will drop my MPG down some, especially unloaded. May help me loaded actually.
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jayb
Dodge Dakota
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11/02/2005
01:21:56
| RE: Is the 4.7 a good engine?
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i cant really say as a fact that the 4.7 would be garbage. cause your right. i dont have one but!....... the dynos dont lie. even dodge says that newer 4.7's peak torque is the same as the 318(except H.O.), but its at 400 rpm higher. so for racing purposes, i would say the 4.7 all the way. towing wise,... 318. noone is gonna rev a engine to 6 grand while towing. not me at least. anyhow, i perfer engines that have been around. ive had overhead cam engines, i dont see how its easier to change 2 cams instead of 1 but whatever... more to go wrong with ohc engines i think.
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Stu Baker
Dodge Dakota
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11/02/2005
07:32:23
| RE: Is the 4.7 a good engine?
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...texas todd...I did my own oil changes. Used Mobil 1 syn. in the dakota. I've always changed the oil in all my mtrs. Hey, I'll have the truck back w/ a new reman. 4.7 in another week or so. I read these boards and see alot of 4.7's w/ 100k+ on them. My 4.7 just happened to let go at 88k.
sambo
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Mikes99Dakota
GenIII
11/02/2005
09:26:46
| RE: Is the 4.7 a good engine?
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Its easier to change two cams instead of one, now maybe not 4 cams though....hehe
Graphite, If your dak pulls out of overdrive while towing with 4.56 gears you better sell the truck. I have been on somewhat steep hills and my dak can acclerate slowly on all of them if not faster than some in O/D Lockup....your dak will do fine.
1999 RC Auto 5.2L
Mopar PPH, Magnaflow 3" w/cut-out, 3.90s/Suregrip, 50mm Fastman TB
Track Times:
9.47 @ 72.21mph
14.89 @ 91.33 mph
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toolfan
Dodge Dakota
JOIN HERE
11/02/2005
09:57:17
| RE: Is the 4.7 a good engine?
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graphite
desired future mods say 4.10 gears with lsd
you better change that to 4.56 with lsd. just a thought
hopeful those gears get you into the 15.00 but i don't think you should have any trouble. good luck with the gear change hopeful it goes smooth.
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Kowalski
GenIII
11/02/2005
16:59:54
| RE: Is the 4.7 a good engine?
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GraphiteDak - I'd think you should be fine towing with OD with your rig; I've always kept the OD on towing with my 4.7. Never had a problem with it hunting gears; ask the in law why mine hasn't cooked ;-)
jayb - part of the reason the OHC design is easier to change cams is you don't have to drain cooling system and pull radiator; also don't have to worry about nicking a lobe threading the cam in to the motor. I think there's less to go wrong with an OHC design - no pushrods to worry about.
Lead, follow, or get out of the way
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jerry
Dodge Dakota
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11/02/2005
19:02:03
| RE: Is the 4.7 a good engine?
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Both motors are very good- no arguments there. The real story will be told when we get to see how long these 4.7's last and how they serve there purpose. We all know its going to take a while look how long the 318 was out. I personally dont think any other motor will be as reliable and longest lasting as the good ol' 318!
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