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Discussion Starter #1
Thanks in advance for any and all help.
I currently own a 99 F350 CCLB 7.3L ZF6. All modifications were performed by me, and can be seen in my signature.

I have found a 2008 F250 Ext Cab LB, 6.4L, Auto, 75k miles, Tow Package with tranny cooler, 4xr4 Manual locking hubs asking price is $24500. All maintenance performed at regular intervals. Transmission flushed and new filter at 55k, coolant flushed at 55k.

I may be considering selling my truck in order to purchase this one. But i know very little about the 6.4L. I had told myself i would never sell mine until i could buy a 6.7L but this truck is in really good condition and very well cared for.

What do i need to look for when purchasing a 6.4L or 2008 Super Duty in general?

What maintenance will need to be performed in the near future?

What modifications are considered necessary mods, and what are considered highly recommended for Daily driving and bassboat towing, and occasionally a track hoe. ?

Any articles or links to read for reference are greatly appreciated. Or if someone would like to summarize something that would be even better.

For example: if someone was purchasing a 99-03 7.3L i would suggest they check for blow by, check for color of smoke on cold start. Check smoke under load and if turbo cleans up smoke. Check turbo shaft for play. Check oil pan for leaks as its difficult to replace. Check rear fenders for cancer as its very common on those years. There are plenty more but you get the point.

For eXample Common Maintenance Items are:
ICP, IPR, EGR Tube, Clutch Pedal Bushing, and several others.

For Recommended Mods: I would suggest they install a 6637, S&B, or Ford AIS intake. 4-5" Exhaust preferably MBRP. A PHP Hydra Chip for Tunes, and IssPro Guage set with Boost, Pyro, and Fuel pressure for manual, or for auto replace the fuel pressure with tranny temp guage. Its also common to install a billet turbo wheel for faster spooling and better boost and to eliminate turbo surge associated with most tunes.

For more in-depth mods: I would suggest either a return spring upgrade to boost fuel pressure, or a regulated return kit, or a 4-line feed kit. An High pressure oil crossover line. A 38R turbo upgrade for late 99-03 or a Van turbo upgrade for early 99 models. Either 160cc/30% over injectors or 178/80 injectors for moderate upgrade reaching around 400HP. For automatic transmissions they can only handle a certain amount of torque before they are very well known for going out. I am not as familiar with autos but i know they need to be built to withstand hardly any engine modification.

Thanks Again
Sorry for such a lengthy post
 

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Discussion Starter #2
No one has any comments to help me out?
I need to decide whether to make an offer on this truck or not
 

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Discussion Starter #3
I cant believe no one has anything to say about 6.4L
 

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Well, I suggest you find yourself a nice 2011 or later at the junkyard and pull the seats and put them in your 99. Then you'll have comfort AND reliability. If you go for the 6.4, do the full delete, flush the cooling system and add a filter, and use the best lubricity additive you can find every time.


Sent from AutoGuide.com Free App
 

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from my recent experience, if you have AE, look for any code and do all test you can. Open the fuel filter on top of the engine, remove filter and flash a light to see if you fond any shinny stuff. If yes, that mean that the HPFP is on is way out and that you will have to replace ALL fuel component (filter, hose, line, cooler, rails, injectors, HPFP, LPFP, ...)

depending where you live I would suggest to do all delete with tune. some other mods would be rad, intake, coolant filtration, ARP stud and airdog/fass fuel pump, ....

don't forget that every thing is more expensive on these truck. you need to stay on top of maintenance and good quality fuel with adhesive will help.

I have both right now, 2002 and 2008. the 2008 is a great truck and lots of power, but it's going to be for sale because my 2002 is way more reliable IMO.
 

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Discussion Starter #6
I don't have AE but I'm an engineer for Ford. So I have DET (diagnostic engineering tool) and IDS (what dealers use). There are no codes on it. I didn't do any test but I could. I'll check filter bowl. But I'm probably not going to buy it. Everyone has warned me against it.
 

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look I have an 08 ... dealer had to replace both egr's, dpf, cam belt pulley. I did the water pump when it went out .. shop told me 7hr labor at $98 an hr +cost of pump at $340 ... did it my self in 3 hr and cost me $90 for the pump
 

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Search this forum for an answer. It has been answered lots of times.

As for me ... you want to look for service records. Period.

I am at 91k miles and doing the 100k mile service. Last week I ... dropped in a Mishimoto radiator, replaced belts, hoses, pulleys, tensioners and flushed the cooling system with Fleetguard restore and VC9. I also serviced the transmission with new fluids and external filter. Still need to flush brake and power steering fluid. Then, I'll replace diff fluid. I think my bill is right around $1500 in parts for all the above but I haven't added it up. The CAT ELC alone was about $110. Geez.

If the owner serviced the truck and kept records then the truck will have everthing done to it that needs to be done. Records!

Oh yeah, I need 2 new front tires ... $550.

Look in the owners manual for service work and then figure nothing has been done to the truck. Then add up all the service work it would take to bring the truck to a known and serviced condition. Bumper to bumper. Add this to the purchase price.

My truck is a sweet ride but it does like to be serviced.
 

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look I have an 08 ... dealer had to replace both egr's, dpf, cam belt pulley. I did the water pump when it went out .. shop told me 7hr labor at $98 an hr +cost of pump at $340 ... did it my self in 3 hr and cost me $90 for the pump
Can I ask how many miles on it when the work was done? This 6.4 is starting to scare me.... :(
 

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I have found a 2008 F250 Ext Cab LB, 6.4L, Auto, 75k miles, Tow Package with tranny cooler, 4xr4 Manual locking hubs asking price is $24500. All maintenance performed at regular intervals. Transmission flushed and new filter at 55k, coolant flushed at 55k.

I may be considering selling my truck in order to purchase this one. But i know very little about the 6.4L. I had told myself i would never sell mine until i could buy a 6.7L but this truck is in really good condition and very well cared for.
Almost exactly what I bought, but I have the regular cab, and it had 70,000 on it. Exhaust delete & Mini Maxx I have seen the records on this thru carfax at the dealer, it got good care. (It was a farm truck) But the price was less...$20K
But there are some real horror stories about costs on these...but a friend said that these were good engines...I'm hoping he knows what he's talking about! Geez
 

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Back in July:
"I don't have AE but I'm an engineer for Ford."

He was asking about buying a 2008 6.4...something odd about him having to ask us about his products.

"But I'm probably not going to buy it. Everyone has warned me against it."

Came to his senses....
 

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Here's the skinny: The 6.4l, unless the original owner was smart enough to pull off all the mandated EPA equipment incl. DPF, EGR, and tuned it (manditory to fool the ECM into not looking for sensors that were taken with the above-mentioned equipment) is going to fail. It will likely fail around the same time mine failed, around 225k miles. Mine just came back from the shop with a newly overhauled engine incl. new pistons (the bores were .030 out) and new heads. The heads were o-ringed and the engine was put together properly. New exhaust manifolds with up pipes by Blue Dog were added as was a FASS lift pump. The injectors and turbos are fine so they left those alone. I haven't put more than 500 miles on the engine since then because I bought a sedan while the truck was in the shop. Now I'm considering selling the truck. It's an 08 F350 Crew/long SRW 4x4 FX4 package with heated leather seats, adjustable pedals, analog HVAC controls, aftermarket speakers/sub/amp but stock head unit. Basically a really optioned-out XLT. I will sell it if I'm hired on with a company I recently interviewed with and will be asking for the $16k I just spent on repairs plus $10k. We'll see...
 
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