4.7 motors-are they reliable? - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer 4.7 motors-are they reliable?

Print Thread

Page 2 of 3

1

2

3

Re: 4.7 motors-are they reliable? [Re: DCM71cuda] #1102988 10/28/11 01:49 PM 10/28/11 01:49 PM
Joined: Feb 2010 Posts: 1,377 Ohio Todd pro stock
Todd pro stock Joined: Feb 2010 Posts: 1,377 Ohio	My wife totaled my '03 also. Had 145k when it died. 6892426-DSCF2414(Large).JPG (68 downloads) Last edited by Todd; 10/28/11 01:50 PM.

Re: 4.7 motors-are they reliable? [Re: Todd] #1102989 10/28/11 01:55 PM 10/28/11 01:55 PM
Joined: Jan 2003 Posts: 10,646 S.E.Ohio Magnumguy I Live Here
Magnumguy I Live Here Joined: Jan 2003 Posts: 10,646 S.E.Ohio	Quote: My wife totaled my '03 also. Had 145k when it died. They totalled that? "Multiple Magnum owner since 1978!!" https://www.facebook.com/groups/146952895354657/

Re: 4.7 motors-are they reliable? [Re: Magnumguy] #1102990 10/28/11 02:11 PM 10/28/11 02:11 PM
Joined: Feb 2010 Posts: 1,377 Ohio Todd pro stock
Todd pro stock Joined: Feb 2010 Posts: 1,377 Ohio	Quote: Quote: My wife totaled my '03 also. Had 145k when it died. They totalled that? Yea its alot worse than it looks. The front of the frame was shoved over and the bottom of the B-Pillar was pushed in 4" and the rear axle housing was bent. Busted the condesor, radiator, steering rack. The frame was also bent where the lower control arm attaches.

Re: 4.7 motors-are they reliable? [Re: Todd] #1102991 10/28/11 05:05 PM 10/28/11 05:05 PM
Joined: Sep 2011 Posts: 2,042 colorado S savoy64 top fuel
savoy64 top fuel S Joined: Sep 2011 Posts: 2,042 colorado	well besides seeing more dead intrepids at the pickapart it seems for the dakota/durango there are more 4.7 being recycled---course maybe some people cant afford the transmission repair bill and give up---bob

Re: 4.7 motors-are they reliable? [Re: savoy64] #1102992 10/28/11 07:58 PM 10/28/11 07:58 PM
Joined: Jan 2003 Posts: 20,198 Park Forest, IL slantzilla OP Too Many Posts
slantzilla OP Too Many Posts Joined: Jan 2003 Posts: 20,198 Park Forest, IL	Thanks for the input everyone! I shouldn't have any trouble with sludge, I normally drive at least 25 miles every time the truck is started. I will switch it over to Mobil 1 if I get it. I've never seen a 4.7 auto Dakota run at the track, but I had a buddy with an '02 4.7/5 speed that would eat the ass right out of my 5.9 R/T. "Everybody funny, now you funny too."

Re: 4.7 motors-are they reliable? [Re: slantzilla] #1102993 10/28/11 08:17 PM 10/28/11 08:17 PM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	158k no problems 15/40 in warm and 5/30 in cold, i do block my grill dec to feb.

Re: 4.7 motors-are they reliable? [Re: ademon] #1102994 10/28/11 08:26 PM 10/28/11 08:26 PM
Joined: Jan 2007 Posts: 125 Stockbridge, GA 7 7D9LRE member
7D9LRE member 7 Joined: Jan 2007 Posts: 125 Stockbridge, GA	I had a '99 GC with 225k with no problems. Had one scare a couple years ago, we go to IA every Christmas. Checked oil before the return trip and found white sludge in the fill tube, thought it was a blown head gasket. After a quick internet search I discovered that it's a fairly common problem in cold climates.

Re: 4.7 motors-are they reliable? [Re: 7D9LRE] #1102995 10/29/11 09:33 AM 10/29/11 09:33 AM
Joined: Sep 2003 Posts: 1,465 Carson City, NV B babarracuda pro stock
babarracuda pro stock B Joined: Sep 2003 Posts: 1,465 Carson City, NV	I have a 2001 Durango with 112K. Used to tow my race car from San Luis Opispo, Ca to Vegas. It has more powewr than my 78 D200 with a 360. Only problem is I had to replace the left exhaust manifold gasket. Why do you have to replace the plugs every 30K?

Re: 4.7 motors-are they reliable? [Re: babarracuda] #1102996 10/29/11 10:19 AM 10/29/11 10:19 AM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	my 04 Dakota has 75K miles, only oil changes. everything else is still original. never any problems with it. wasn't there a recall or service bulletin on the PCV system for the earlier 4.7s? thus why they sludge up. it's got 3.55 gears and bigger/heavier than stock tires that are 31" tall. 2wd auto, and I average 17.5MPG with it with more city than highway driving. Photobucket sucks

Re: 4.7 motors-are they reliable? [Re: babarracuda] #1102997 10/29/11 04:56 PM 10/29/11 04:56 PM
Joined: Jan 2003 Posts: 6,531 Jacksonville, FL Chris2581 master
Chris2581 master Joined: Jan 2003 Posts: 6,531 Jacksonville, FL	Quote: Why do you have to replace the plugs every 30K? I went 140K on the original set in my 4.7.Gapped them every 50K and they did well. Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.

Re: 4.7 motors-are they reliable? [Re: slantzilla] #1102998 10/29/11 09:34 PM 10/29/11 09:34 PM
Joined: Jul 2003 Posts: 6,167 Maryland GO_Fish master
GO_Fish master Joined: Jul 2003 Posts: 6,167 Maryland	Quote: I've never seen a 4.7 auto Dakota run at the track, but I had a buddy with an '02 4.7/5 speed that would eat the ass right out of my 5.9 R/T. That's interesting. I always thought of the 4.7 as a reliable engine with no HP offerings or aftermarket upgrades? I would have put money on the 5.9... Scott B. "I'm a self-made man... I started with nothing, and I still have most of it!" 68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph 69 340 GTS stock 14.18@ 95.60 mph 01 5.9L Ram 1500 Quad Cab 4x4 01 3.5L 300M 16.23@ 86.97 mph

Re: 4.7 motors-are they reliable? [Re: GO_Fish] #1102999 10/30/11 02:24 PM 10/30/11 02:24 PM
Joined: Jan 2003 Posts: 8,941 Holly/MI D Dean_Kuzluzski master
Dean_Kuzluzski master D Joined: Jan 2003 Posts: 8,941 Holly/MI	Quote: I had a buddy with an '02 4.7/5 speed that would eat the ass right out of my 5.9 R/T. A visual I can certainly live without........... Got 133k+ on our 04 Durango now. I've heared that the 4.7 is good for "losing the chain" and bending the valves in the process after about 140k...............Anyone else???? R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04

Re: 4.7 motors-are they reliable? [Re: Dean_Kuzluzski] #1103000 10/30/11 03:08 PM 10/30/11 03:08 PM
Joined: Jan 2003 Posts: 6,531 Jacksonville, FL Chris2581 master
Chris2581 master Joined: Jan 2003 Posts: 6,531 Jacksonville, FL	Mine turned over 153K this morning,never been apart.Still runs like it did when I bought it new and still gets great fuel economy. Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.

Re: 4.7 motors-are they reliable? [Re: DCM71cuda] #1103001 10/30/11 03:14 PM 10/30/11 03:14 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Got close to a hundred and twenty K on my dak. and do a lot of towing with it and it is trouble free.

Re: 4.7 motors-are they reliable? [Re: MoparforLife] #1103002 10/31/11 02:14 AM 10/31/11 02:14 AM
Joined: Jan 2003 Posts: 20,198 Park Forest, IL slantzilla OP Too Many Posts
slantzilla OP Too Many Posts Joined: Jan 2003 Posts: 20,198 Park Forest, IL	Went down and looked at the truck again today and it is a 4wd. How much does that affect gas mileage? My 5.9 I average 15/17 with, will this 4.7 match that? "Everybody funny, now you funny too."

Re: 4.7 motors-are they reliable? [Re: Dean_Kuzluzski] #1103003 10/31/11 03:01 AM 10/31/11 03:01 AM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	Quote: Quote: I had a buddy with an '02 4.7/5 speed that would eat the ass right out of my 5.9 R/T. A visual I can certainly live without........... Got 133k+ on our 04 Durango now. I've heared that the 4.7 is good for "losing the chain" and bending the valves in the process after about 140k...............Anyone else???? I heard that from time to time, but think its rare, probably only happens to abused and neglected 4.7's but i guess when they approach the 200k + area all bets are off.

Re: 4.7 motors-are they reliable? [Re: ademon] #1103004 10/31/11 01:15 PM 10/31/11 01:15 PM
Joined: Feb 2009 Posts: 221 Detroit Rock City! S silent-H-wheel enthusiast
silent-H-wheel enthusiast S Joined: Feb 2009 Posts: 221 Detroit Rock City!	You betcha the 4.7L is reliable. I had a 2002 Jeep Grand Cherokee with the 4.7L HO. It was a beast! Had 253,500 trouble-free miles on it when I sold it. Last I heard, it's still running fine. I changed the oil every 3,000 miles and the plugs at recommended intervals. Never had to open the engine up (for repair). Great motor. John 2019 Jeep Grand Cherokee SRT 2018 Challenger SRT Demon

Re: 4.7 motors-are they reliable? [Re: silent-H-wheel] #1103005 11/01/11 08:15 PM 11/01/11 08:15 PM
Joined: Jan 2003 Posts: 20,198 Park Forest, IL slantzilla OP Too Many Posts
slantzilla OP Too Many Posts Joined: Jan 2003 Posts: 20,198 Park Forest, IL	Traded my '04 GTO and $4500 for this today. 22,000 miles and loaded. I'm diggin' it. Worked them down $2K on it because the sales people teamed up to rip the front fascia off the Goat in their parking lot. "Everybody funny, now you funny too."

Re: 4.7 motors-are they reliable? [Re: slantzilla] #1103006 11/02/11 09:18 AM 11/02/11 09:18 AM
Joined: Jan 2003 Posts: 14,610 Not2farfromNashville, TN R Rug_Trucker I Live Here
Rug_Trucker I Live Here R Joined: Jan 2003 Posts: 14,610 Not2farfromNashville, TN	A mutual slant friend Mike U. has a 2000 or 2001. He had to replace the heads. They were back ordered because of demand for them. I don't know all the details. "The only thing to do for triumph of evil is for good men to do nothing" "NUNQUAM NON PARATUS!"

Re: 4.7 motors-are they reliable? [Re: slantzilla] #1103007 11/02/11 01:56 PM 11/02/11 01:56 PM
Joined: Jul 2003 Posts: 1,107 Spring Valley ,Ca. moparsquid super stock
moparsquid super stock Joined: Jul 2003 Posts: 1,107 Spring Valley ,Ca.	I have a 03 dodge dakota quad cab,4.7 5 speed 16 inch aloys still has most of the original equitment from the factory. gets 21mpg highway and hauls butt.if i change the muff and chip it i could take it to the strip on friday nights.I love I wont get another one to replace it!

Page 2 of 3

1

2

3

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1