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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 11-21-2011, 07:47 PM
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IN2H2O IN2H2O is offline
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Default My 4.7 is just about done...

I am sad to report that it looks like my 4.7 is on it's last legs. I bought this 2002 QC 3 yrs ago with 120K miles on it. It now has 280K miles on it and and is starting to show it's age.

It is consuming a quart of oil every 800 miles and just sucked back a gallon out my radiator since I last checked it a few weeks ago. It gives a big puff of blue when it starts in the morning as well as any time I get on the throttle after coasting for a bit.

After reading of all the problems people have had with this motor I am pleased to say that this has been a pretty solid little engine. Other than belts and hoses, the only problem it ever gave me was a $30 crank sensor.

I am going to purchase a low mileage oem engine to replace it with and then rebuild the old one as a backup and hopefully add some performance to it as well. I want to see how many miles I can put on this truck and my target is at least 500K miles.
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  #2  
Old 11-21-2011, 08:19 PM
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How about a Hemi upgrade?
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  #3  
Old 11-22-2011, 04:23 AM
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Quote:
Originally Posted by RockyRam View Post
How about a Hemi upgrade?
I'd do a Mercedes diesel conversion long before I ever did a Hemi swap.

The 4.7 is perfect for my current needs and if I ever require more power, I'll go back to a cummins.
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Old 11-22-2011, 10:16 AM
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hey man it is prob. just a headgasket which would be a lot cheaper to replace then the entire motor just a thought to look into and while in there do the timing chain.
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  #5  
Old 11-22-2011, 10:45 AM
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Quote:
Originally Posted by icywhite View Post
hey man it is prob. just a headgasket which would be a lot cheaper to replace then the entire motor just a thought to look into and while in there do the timing chain.
You are probably correct...but while I'm in there I may as well go ahead and press in new valve guides and seals, replace the oil pump, water pump, freshen up the crank bearings, rings, etc...where do you stop? Everything has 280,000 miles on it.

As this is my primary vehicle, I would much rather drop in a newer engine, rebuild the old one on my time and then swap them back at a later date.

I can swap the engines in less time than most could replace the head gaskets and while it seems a daunting task, it is actually alot less hassle in the long run. I see people spend way more time and energy avoiding a job than the actual job would have taken in the first place.

Last edited by IN2H2O; 11-22-2011 at 10:47 AM.
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Old 11-22-2011, 11:34 AM
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Quote:
Originally Posted by IN2H2O View Post
You are probably correct...but while I'm in there I may as well go ahead and press in new valve guides and seals, replace the oil pump, water pump, freshen up the crank bearings, rings, etc...where do you stop? Everything has 280,000 miles on it.

As this is my primary vehicle, I would much rather drop in a newer engine, rebuild the old one on my time and then swap them back at a later date.

I can swap the engines in less time than most could replace the head gaskets and while it seems a daunting task, it is actually alot less hassle in the long run. I see people spend way more time and energy avoiding a job than the actual job would have taken in the first place.
Well put my friend, best of luck! I agree with you completely that the Hemi is unnesscary in most applications. I have always said if you NEED the kind of power/TQ that the Hemi provides, then you need a 3/4 ton truck. Wanting it however, is an entirely different matter.
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  #7  
Old 11-22-2011, 11:57 AM
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Quote:
Originally Posted by ArmyofOne View Post
Well put my friend, best of luck! I agree with you completely that the Hemi is unnesscary in most applications. I have always said if you NEED the kind of power/TQ that the Hemi provides, then you need a 3/4 ton truck. Wanting it however, is an entirely different matter.
I have already learned my lesson between want and need, lol. I have owned 2 different Magnum V-10's and a 485HP/850ft/lb Cummins Dually and I have to say, this little 4.7 is more than enough for my current useage and is alot easier on the wallet. I pass thru a ton of little towns on my 150 mile daily commute with small town cops that will bust you for being 5mph over the limit so I have learned to just sit back and get there when I get there. My mileage likes this driving style too.

If I ever move back up North then I will likely pick up another Cummins.
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Old 11-22-2011, 12:24 PM
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The 4.7L is a good engine, and you got plenty of use out of it. I agree it could be repaired, but also agree it is easier to just put a new motor in it You're certainly getting your money's worth out of the truck!
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  #9  
Old 11-26-2011, 03:50 PM
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My truck made the 12 hr round trip yesterday to pick up the new engine. I paid $1500 for it with 71K miles on it. It had the crank pulled to be measured, polished and the main and rod bearings replaced as well as the rear main seal. The valve covers seals were also replaced.

Rather than dicker on the price, I got him to toss in the old injectors. I would like to get another 200K miles out of it but realistically, not knowing it's history, if I get 100K miles out of it, I will be happy.

I picked up everything else I will need to complete the swap for under $200 including a brand new OEM waterpump, spark plugs, rad hoses, thermostat, serpentine belt and gaskets. Just need to find a new passenger side motor mount and I am ready for the swap.

I will be doing the actual swap in a couple weeks unless my current engine changes it's mind.
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Last edited by IN2H2O; 11-26-2011 at 03:53 PM.
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  #10  
Old 11-26-2011, 09:06 PM
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Hope it all works great for ya! Keep the truck because it still looks new!
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