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New guy on the block and has the 7.3 diesel bug bite

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New guy on the block and has the 7.3 diesel bug bite

 
  #1  
Old 07-02-2019, 10:12 PM
GotAll4
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New guy on the block and has the 7.3 diesel bug bite

I was on another side of this huge forum and they thought it would be better if I posted this on this site as I am stuck on a 7.3.


Though I would try a quick post and a quick intro. I really don't have my diesel truck yet but I sure got the bite. Almost had one last week and that's what got me to find this site. Looking for a F350 7.3 diesel DRW 4x4 with 3.73 gears. Primary use will be RVing down south during the Ohio winters in a couple of years when I retire. Anyway didn't have enough info to pull the trigger so I was searching the net for info I needed when I came across this forum. Looks like a lot of good guys and good info here. It was killing me to walk away from a solid 2002 350 7.3 for less then $7k . It has 4.10 gears and talking to many of my customers (I am a sales rep in the automotive industry) that have this same truck are thrilled with their 3.73. One guy camps and pulls a big 5th wheel (that will be me) and the other is mainly a daily driver.
There were some other issues. Hi pressure pump is leaking, The coolant bottle was dirty may be oily inside. Others were cosmetic and easily fixed. Just don't know what I'm getting into with these repairs. Has 240k on it. The 4.10 gears concerned me and I know they are better for towing but looking at some economy too when I'm camped for weeks and doing site seeing and grocery shopping. Going to start off our journey in NC and Tenn so they should be a good help. I read here on old posts 3.73 vs 4.10 where someone was suggesting using taller tires to bring the ratio down from 4.10 to what ever. How effective is that? Anyone got an opinion?
 
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Old 07-02-2019, 10:37 PM
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T early dually only came with 4.10 gears. I know because I bought it new and ordered it and 3.73 on DRW's you couldn't get. That said, with DRW's you will probably see more 4.10 gears then the 3.73. Can you do the repairs your self? Guys here can walk you right threw them if you ask. Most here do do there own repairs. Leaking HPOP can be fixed, but dealer will replace and charge a lot. But if you have oil in the coolant bottle that's more involved. We can walk you threw that also but your going to need more tools. If it's in the cups, I'd replace them all. That means pulling the injector, all the injector cups, rering the injectors put new cups in, test, reinstall injectors etc.. at that point change new valve cover gaskets, injector wiring etc. Not a hard job but takes time. You want to do it right the first time or you will be right back in there again.
Or you can skip all that and spend 80K on a new truck. i think you heading in the right direction.
 
  #3  
Old 07-03-2019, 08:42 PM
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I thought all 7.3 dually’s had 4:10’s. I could be wrong though.
 
  #4  
Old 07-03-2019, 09:42 PM
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Originally Posted by fordboy2 View Post
I thought all 7.3 dually’s had 4:10’s. I could be wrong though.
I thought so too.
 
  #5  
Old 07-03-2019, 10:01 PM
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Nah we have an 02 with 3.73's at work with the zf6.
 
  #6  
Old 07-03-2019, 10:11 PM
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I think I read on line last night that 99 to 03 came with ether 4.10 or 3.73. Also I get the vins and have one of my Ford dealers run it and both have showed up.
Ya I was planning to do as much of the work that I can. Not a certified mechanic but know enough to be dangerous. Just got to get one first.
 
  #7  
Old 07-04-2019, 01:37 AM
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Kinda depends what you're towing. I have a little 8k# 5er with SRW and 3.73 is just dandy.

4.10s will pull better no doubt, at the expense of fuel and comfortable top speed.

Get the most virgin truck you can find.

If there's a K&N filter on it be sure to check the turbo wheel for dusting. Well inspect that regardless, the OE airbox is notorious for not sealing properly.

Post up what you are looking at so our gajillion experienced eyes can offer opinions.
 
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Old 07-04-2019, 09:14 AM
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You may have to look for awhile to find a 3.73 geared dually, they made a few according to some but they seem to be very rare, I have yet to see one.
 
  #9  
Old 07-04-2019, 04:59 PM
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mine is a 3.73 dually, I ordered it that way. Couldn't get limited slip with that gear though.
 
  #10  
Old 07-05-2019, 06:32 PM
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Drove my 2001 DRW with 3.73 gears off the floor in 2001. Maybe 4x2 vs 4x4?
 
  #11  
Old 07-06-2019, 10:47 AM
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3.73s work great with towing 13k plus....ask me how I know. BUT, I do have a SRW and a ZF-6. Do you have to have a DRW? They are not as necessary as people think. My Toyhauler is 13500 loaded. It does squat my truck a tad, but the tires are fine and I do not deal with sway. Something to consider.
 
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Old 07-11-2019, 11:10 PM
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Got one for Friday night to check out. 02 with 191K on it. Just found it tonight by a fluke. Wish me luck!
 
  #13  
Old 07-13-2019, 10:46 PM
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Took the vin to the ford dealer and found out it's only 2 wheel drive. Also another 4.10. Starting to believe they are very rare.
Checked with a local diesel repair shop and they wanted $1500 to 2K to change gears along with new bearings. Been rethinking that 02 with 240 and a 4.10. $6995 gives me a lot of room for add ons.
Don't know how difficult they are to change. Did my Bronco ll once and didn't know you had o use a dial indicator o set up the gears. Had some noisy gears for a while until I could get someone to fix properly.
 
  #14  
Old 07-18-2019, 09:18 PM
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Guess I could settle the argument that all the duallys were 4.10 gears. Took the vin to my Ford dealer and the bulled up the build sheet and wala 3.73. How ever the truck was trashed.
 
  #15  
Old Yesterday, 12:24 AM
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I don't think 4.10s are such a bad thing, especially since it will be towing a trailer. A taller tire will strike a balance if you find it to be a problem. Swapping gears will never be cost effective. That said, maybe some guy back when swapped gears. Most of these trucks have some history by now.

Reminds me of when my FIL was buying my MIL a Jaguar XJS. My FIL asked what the city/hiway fuel economy was, sales guy says "Don't worry about it." Same deal here, the whole adventure is costly so a few MPGs one way or the other really don't matter. Except as a matter or principle, or bench racing.

Overall condition and configuration you want are the main qualifications, IMHO.
 

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