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Whats the norm life span of a 4.7?

49014 Views 50 Replies 40 Participants Last post by  andyvh1959
Just picked up an 03 Dakota with 83K, just wondering how much life to expect out of it. It was an old mans truck before so Im sure its not been beat on but Im not sure the history either. These go past 150K much?
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77000miles, no issues.
206579 on mine right now ....trans was replaced at 179k.... dosn't leak a drop of oil and burns less then half a qt(barley noticeable) and it still pushes 60 psi


Mobile 1 10w-30 wix filter since day one
206579 on mine right now ....trans was replaced at 179k.... dosn't leak a drop of oil and burns less then half a qt(barley noticeable) and it still pushes 60 psi


Mobile 1 10w-30 wix filter since day one
:mullet:
I just bought mine 10 days ago, 144k and seems to run fine, other than a ticking at start up that someone suggested I do an engine flush to get rid of.
Transmission seems to be working fine.
trans was replaced at 179k....
Is that unusual for the trans?
i have 131xxx on both engine and tranny, both going strong :)
Keep in touch Alex! I might b moving to FL here soon
Is that unusual for the trans?
Anywhere around 200k
Just picked up an 03 Dakota with 83K, just wondering how much life to expect out of it. It was an old mans truck before so Im sure its not been beat on but Im not sure the history either. These go past 150K much?
You can expect it to die at precisely 148,286 miles.
I sold my Ram with the 4.7 last year with 190,000 miles. Original engine and trans, went through about a quart every 3,000 miles. Trans was still strong.
You can expect it to die at precisely 148,286 miles.
:rotflmao: :nono:
Keep in touch Alex! I might b moving to FL here soon
Florida's nothing special, im sure its better than Topeka though, I couldnt imagine much going on there.

What are ya coming down here for?
Florida's nothing special, im sure its better than Topeka though, I couldnt imagine much going on there.

What are ya coming down here for?
tell me, what's so bad about florida? i'm interested in moving as well. more for family life. thinkin there are more opportunities and things to do for kiddies.
I traded my 2000 CC w/ 4.7 at about 240k miles. Still ran like a raped ape. Original motor and trans. Only thing that failed of natural causes was the alternator at about 190k miles. Radiator took a rock on the interstate but that was it.

I sold a 2003 regular cab, 4.7 w/ manual trans last year. It had about 150k on it. No problems. It too ran STRONG.

Neither had leaks, burned oil, or other issues. Would trust them to run forever with regular maintenance.
I have a complete 4.7HO core sitting under deck with 220,xxx km(132,xx miles) its not dead dead, timing marks are still lined up. its prob is it has some intake valves not closing dont know yet if there bent or stuck, the timing chain on it is also at the limets for stretch with both tensioner for the secondary chains at max extension, minimal wear on the guides though. it is a very clean eng so it has had regular oil changes.
I have a complete 4.7HO core sitting under deck with 220,xxx km(132,xx miles) its not dead dead, timing marks are still lined up. its prob is it has some intake valves not closing dont know yet if there bent or stuck, the timing chain on it is also at the limets for stretch with both tensioner for the secondary chains at max extension, minimal wear on the guides though. it is a very clean eng so it has had regular oil changes.
Are you selling this H/O engine? If so how much are you asking for it?

SPEED SAFE, AIR RAM
ummmm, no. im keeping my hard earned $60 cored :nana: im eventually going to tear it down and find out whats wrong with the valves, if my wife likes the durango im fixing for her whenever I ever get it done(sticking another non HO engine in to replace severly sludged engine that had timing chain eat the guides and bent valves) i'll rebuild the HO eng and get some kinda tuner to deal with it. thats a little ways in the future though

gotta go remind myself the differences between HO and non HO parts.
Just picked up an 03 Dakota with 83K, just wondering how much life to expect out of it. It was an old mans truck before so Im sure its not been beat on but Im not sure the history either. These go past 150K much?
I had 03 Dakota with the 4.7 I got it at 168k I drove it pretty hard up to 250k. It rusted out pretty bad truck still ran fine, trans and motor was good. I could of got 300k out of it. Because of how good the truck was I bought a 2011 Dakota 4d 4.7 4x4 posi 3.92 now it drive it like granny.
I have 205,000 on my Durango. Original engine and tranny. I change the oil regularly. It loses/burns about a quart in 3000 miles. I think it's leaky valve seals because it puffs blue smoke at startup. I have flushed (and changed the filters) the tranny twice. Still runs strong.

My Dakota has 136,000 on it. I have redone the heads due to a tulipped intake valve, and just replaced the exhaust/cats. Doesn't eat any oil. Runs real strong.
Update:
Durango has 314,000 miles. When cold it takes 3-5 seconds of cranking to start. When warmed up it fires up right away.

Dakota has 223, 000 miles. No troubles or consumption hanits.

Sent from my A1-840 using Tapatalk
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225,000 on mine. All Ive done is brakes, rear end rebuild and transmission rebuild cuz the splitter forks were flat worn out, its a 5 speed manual. Guy rebuilding it said the only thing he had to replace was the forks, everything else looked great. Rear end was done cuz the speedo cable came undone and wound itself up in the pinion and ring gear. Replaced a few seals on the morrow that was leaking oil. Other than that its doin great. Id sure like to repaint it tho. Typical clear coat is fading and flaking off
My 2001 Dakota 4.7 SLT Quad cab just turned 250,000 miles. I have serviced myself from new including rebuilding the rear end due to the clutch packs going out at 170k miles. What would be the service that I need to do to the engine and transmission at this millage? I will replace the timing chain set, replace the lifters and valve seals within the next 3 months, but don't know what else. As for the maintenance, I rebuilt the starter, alternator, replace front and rear wheel bearings, twice, replace the bearings in the transmission extension and just replaced the u joints. Truck runs great with no problems except for loosing a qt of oil between 3000 mile oil changes, (due to valve seals). Replaced the brakes 3 times as well an the steering ram and pump.
Thanks:
JB
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