6.4 Or 7.3 - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 06-10-2013, 06:39 AM Thread Starter
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6.4 Or 7.3

So i currently own an 02 F250 7.3. I looked at a 08 6.4L and it started me thinking about upgrading/buying a 6.4. Ive heard they are pretty bad a** trucks but im not to sure. I like everyone like fuel economy and going fast. I know they can be pretty quick just tuning them but im cocerned with the problems ive heard about them. I dont know alot about them as far as performance, reliabilty, or what to look for if i were to buy one. They seem cheaper to hop up and make fast than the 7.3. Especially a 7.3L with the PMR rods. Just looking for some cut and dry clear insight on the 6.4 motor and there problems. Also looking at the motor is a little more intimidating than the 7.3, extremley crowded and lots of stuff on top of the motor. I dont neccesarily have the rescources to be pulling the cab evertime i need to do something to it. Im a pretty decent mechanic (not a professional yet, hopefully someday) but im not scared to do some research and dive in and work on it myself. Any input would be nice. Thank you.
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post #2 of 2 Old 06-10-2013, 08:44 PM
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I still have my 7.3. I use it everyday for work so I don't drive my 6.4 too much. As far as 7.3's go, it's pretty quick. That said, it doesn't stand a chance against the 6.4 in almost every area. Power, ride, creature comforts....and believe it or not, fuel economy. Granted it think I'm loosing some hpop pressure somewhere which I think is hurting me in the old girl. 6.4 is a little more finicky in regards to maintenance, fuel system especially. No big deal, just make sure you change the filters and drain the separator frequently. Problems are going to be big bucks in the 6.4 compared to the 7.3. But like all things the older it gets the cheaper it will be I imagine. In 11 years and 325,000 miles my 7.3 hasn't left me standing, if I had to choose between keeping one or the other???? I keep the 6.4.

Originally Posted by bjs505 View Post
Of course I'm handy under the hood, I currently own a cummins.

2010 F350 CCLB Cabelas Edition
No Limit cai, Mini Maxx, 5" turbo back Flo Pro, Sinister egr delete, Sinister coolant filter, Cat EC-1, PTP shift solenoid. 20x9 +18 XD Monsters
01' 7.3 CCLB, 6637,wicked wheel G2, HPX, PHP Hydra, MBRP 4" Turbo back, Bellowed uppipes, Stancor gpr, 6.0 cooler, Fpr, Glow shift exhaust, pyro, trans, 203*/billet housing/ Cat EC-1, '07headlights/05' grill, Oh8' gate.
78' F350 "dumpy" old school
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