Is the 6.4 as reliable as the 7.3? - Ford Powerstroke Diesel Forum
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Old 11-10-2011, 08:46 AM
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Is the 6.4 as reliable as the 7.3?

Thinking about getting a powerstroke Dually but cannot afford a 6.7.
How is the 6.4? Tell me the good, bad, and ugly.
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Old 11-10-2011, 10:21 AM
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Mine has been - So far.....
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Old 11-10-2011, 04:18 PM
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I'm probably in the minority here but I've never cared for a 7.3. I love my 6.4!
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Old 11-10-2011, 04:55 PM
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I would also like to get as much info as I can on the 6.4. I am going to be in the market for a new truck and can't decide which way to go. I will be buying a Ford, but can't stand thought of the horror stories you hear with the powerstrokes.

Its hard to tell if the problems are as numerous as the 6.0. I want to know if the 6.4 can me made "bullet proof" with mods like the 6.0 supposedly is.

The 7.3 I had has 377.000 miles on it with nothing more to report than an injector cup leaking. I doubt I will be so lucky again.
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Old 11-10-2011, 05:11 PM
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No it is not as reliable. This will open up a can of worms but. The 7.3 can be driven in a fleet and kind of maintained and last 500k where as the 6.4 needs some loving to last that long and would need a EGR delete at least too.

So the 7.3 is still king of the reliability and will be for years to come I am sure with the complexities of emissions and electronics. Those will always fail first.
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Old 11-10-2011, 05:25 PM
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Quote:
Originally Posted by dereku View Post
No it is not as reliable. This will open up a can of worms but. The 7.3 can be driven in a fleet and kind of maintained and last 500k where as the 6.4 needs some loving to last that long and would need a EGR delete at least too.

So the 7.3 is still king of the reliability and will be for years to come I am sure with the complexities of emissions and electronics. Those will always fail first.
Amen
End of discussion.
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Old 11-10-2011, 07:20 PM
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how reliable is the 7.3 at 350hp?
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Old 11-10-2011, 08:09 PM
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Originally Posted by drunk on diesel View Post
how reliable is the 7.3 at 350hp?
NOT fair....you need 3 ...7.3's to get that kind of HP
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Old 11-10-2011, 09:08 PM
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nothing is as reliable as the 7.3 except mabey a 5.9 cummins. the 7.3 is bulletproof alot less emmisions crap to go wrong. honestly i would hate to buy a newer truck and still have to do headstuds and egr deleate and do away with the reburn just to get your fuel milage back and to make it somewhat reliable.
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Old 11-10-2011, 09:32 PM
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maybe a 5.9 Cummins?!?! LOL Sorry, but the 12v Cummins is arguably the best, most reliable engine ever offered in a passenger vehicle.

The 7.3 has CPS issues, a Rube Goldberg designed HEUI injection system, potential cavitation issues, HPOP issues, cold start issues, etc. etc.

the ONLY issue a 12v has is the KDP. you can nix that issue from every being an issue with an hour of labor and a tube of silicone.

no need to do head studs on a mild 6.4. no real need to do EGR delete if you just run a delete tuner early. dpf delete takes no longer than installing an aftermarket exhaust on a 7.3.

the 6.4's will start in the cold and have a beast of a transmission. arguably not as reliable as a 7.3, but power-to-power, they're pretty decent. hollar at me when you have a reliable 7.3 making 450+rwhp and let me know how much money you have in it.
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