I may be ready to replace my Excursion with the 7.3L with a newer (but most likely used) diesel Superduty truck.

Looking around I am seeing some trucks equipped with the 6.4 and 6.7 that are within my price range. I gather the 6.4 was used from 2008-10 and the 6.7 is the current motor.

I have no personal experience with either. My application is daily driving and light towing (race car; rig probably weighs 6-7K loaded up).

Thoughts on which I should lean toward? Thank you.

 

I wouldn't give up the 7.3 for anything!


How much you want for your 7.3 X? You may be able to find some one willing to trade their 6.4-6.7 for your 7.3. I know I would!

 

I'd recommend the 6.7L truck. They seem to have far fewer problems at this point in time.

 

Definitely the 6.7L. I had the 6.4L, and while it was a good truck/engine, the 6.7L puts it to shame. More power, quieter, a LOT more power, and better mileage. Oh, did I mention more power? Really, it's a lot better engine than the 6.4L. If you can get into a 6.7L, you won't regret it.

 

Sounds like enthusiastic support for the 6.7L.

Just put my Ex in the classifieds here: https://www.ford-trucks.com/forums/1...12k-miles.html

Location is Austin, TX.

 

Just hope your HPFP doesn't go out. I hear it is something like $15K to replace and ford won't warranty it...

Another case of warranty denial on 2011 PSD 6.7L HPFP failure? - Diesel Forum - TheDieselStop.com

 

And like all the engines, the number that don't have problems far outnumber those that do. And Ford doesn't "automatically" deny the warranty. The circumstances surrounding the failure dictate whether they will honor the warranty or not. Now, that being said, there are a greater share of these that are having trouble getting warranty, but still the number is small compared to those that have had no problems with their trucks.

 

If I had the choice I'd want a 6.7 over a 6.4L, currently have a 6.4L.

 

I absolutely LOVE my 6.7!!!

-BF

 

The emissions regulations have caused a lot
of complexity to be added to late model
diesels. Can only wonder how they will be
in 5 or 10 years. The 7.3 is highly reveered.

 

Loaded up with emissions related technology and.....extremely reliable. IOW, the same path the gas engines took when the EPA started cracking down on them.

I'm sure there are plenty of guys around here that remember what passed for a "performance" vehicle back in the early 70's, and what a power robbing gas sucking bunch of crap the emissions tech of the time was. Today's performance gassers are more powerful, orders of magnitude cleaner, and get wayyy better fuel mileage than your daddy's did.

I'm betting the diesel side will see the same technology/performance/mileage curve the gass side did, except at a quicker pace.

 

6.7 will be better for those short city runs since it has DEF.

 

I've owned both and the 6.7 out shines the 6.4, better mileage, lots more power.

 

That is all true, but, personally I wouldn't take the risk since $15K would buy me ANOTHER 7.3 truck.

The 6.0 guys said only a few are having head gasket trouble when they first came out too.

All I know is, the 6.7 came out and within a month guys were having fuel pump problems.

 

Really? I don't recall seeing one on FTE until they were out for more than a year. There was one where the pump failed and it was leaking fuel everywhere, but that was replaced under warranty without incident.