I've got a 351w/AOD combo, and the sticker in my door says the truck is rated for 6,050 pounds. In your 90 supercab What trans do you have? Whats the gross weight?

 

I have e4od trans. Door says gvwr 6250

 

Thanks. I am also concerned about the AOD. My dad and I beefed it up, but I am not sure if it will hold up.

 

No such thing as beefing up an aod.
I've sheared off too many input shafts to agree.
Just gotta treat them right and they are ok.... Problem is that I didn't. But I expected more from a $1200 trans build. Always failed involving OD. 1-2-3 was awesome. Great trans til OD was involved.

Sorry buddy. Either baby your current truck with the camper or tow it hard with the diesel.
It's hard for me to give up my F150 so I added the diesel. Pros and cons to each

 

You can use the input shaft and wide ratio gear sets out of a 4R70W in the AOD, that helps .......

 

I did. My dad has a trans buddy. He gave us new input shafts, he said were alot better than the factory, and 6 or 7 clutch drum. (I believe it was the forward drum, its been awhile since I helped rebuild it.) These were some parts he had sitting on the shelf.

I get about 16 mpg now in the city, and like 12 when towing a deck boat. What kinda of mpg am I looking at with the diesel?

 

WOW! You're getting 16 mpg city driving with a lifted, geared half ton on 35s! I would think you'd get low double digits if not single.

 

That babying it. Lol. If I decide to have some fun, or whatnot mpg drops to 11-13 easy. I get 12 towing the deck boat taking it easy too, mpg drops in the singles if i push it. Thats also kinda what I was looking at too. I figured the diesel would bring better mpg when towing.

I also don't have any smog, cat, or egr either.

 

I can rely on my 00 psd to get between 13.5 and 14.5 with me driving 80 towing my 4000 mustang on my 3000lb small equipment trailer.
Empty (tips scales just over 10k) and my 80hp economy tune on hyway going 65 to under 70 will get an honest 16.5 and I've had it just over 17 a few times. But that's still aggressive acceleration and some fun mixed in.

 

Thanks UNTAMND. Now if I do get a diesel, should I seriously look into getting a tuner? Will it improve mpg?

 

Yes. Like I said in an earlier post, the truck is exceptionally numb. That is until the turbo spools up and you get moving. You'll seriously almost get into a few accidents pulling into intersections and gassing it and the truck lags and takes its own time to get moving.
With the chip it acts like a freaked out gas job with plenty of *****.
Very impressive.
I gotta say though. Don't buy a generic tuner or chip. Get a DP tuner or a swamps or a tdp chip. Something from a diesel specific place.
I first bought a bullydog programmer. It worked nice but had issues with trans slip and then higher rpm engine noise. I borrowed an sct xcal3 and that was better cause it was custom tunes. But the programmer was extremely slow to change programs from economy to tow to fun.
I bought the DP tuner f6 and was amazed. The difference was night and day, and I could switch programs on the fly (at zero load) and the f6 Jody can email you tunes and also give you trial tunes over the Internet. Or the f5 which is 200$ cheaper and you just send him the chip to reprogram.

 

Yes. You will get better mileage with the tuned truck.... If you stay out of the gas.
Some guys consiststantly get over 18.
I love playing so my 16mpg stock non-fun pathetic powered truck, still got 16mpg after being chipped and was an awesome fun toy truck.

 

Personally, I don't think I could EVER drive a stock 7.3L diesel again.. I've driven my PSD for 4 or 5 years now with aftermarket injectors, chip, etc, etc, etc. and any time I get into a stock one or return mine to stock, I get pretty annoyed. I too like to play A LOT, so when I step down on any truck being used to feeling 400+hp and 850+ lbs of torque and I don't, well it's aggrivating b/c I feel like I'm barely moving. Heck I get annoyed driving my 2010 F-150 5.4L work truck b/c it's too slow.

I guess what I'm saying is, if you get a diesel definitely look into putting gauges, exhaust, intake, and at least custom tuning. I have always been hesitant to put a chip on a PSD with a E4OD or 4R100 auto though. The trans didn't last too long in factory trim, added power will only make it worse unless you do some upgrades to the trans.

 

The 4r100 isn't bad at all. They can all use upgrades for sure but minimal upgrades are nessisary on stock ad injectors and turbo.
Once you upgrade those then the trans needs help. My 00 had 220k when I chipped it. Original unopened trans. All I did was fluid change and flush. Then 120hp tune here we go. 3 years later still no sign of failure or slippage.

 

I am looking for a 1999-2003 f250 with a 7.3. And that year model came with the 4R100. My Dad is familiar with this trans, and he has a expert trans buddy also. My Dad and I would do the work, his friend would tell us what to order in order to toughen the trans.

I would like the add some performance to the 7.3, but right now I am just looking for something that can handle the 4 hr trip there and back many times. I plan to visit home when I have a long weekend, and during the normal breaks.

I believe I will actually have to two the camper there and back 8 times a year. 1 tow- university first semester, 2 tow - back home thanksgiving week, 3 tow- back to school, 4 tow- back home for the month of December, 5 tow - university second semester, 6 tow- spring break, 7 tow - back to school, and 8 tow - back home for the summer.

Normally during thanksgiving break, the month of December, and spring break my family uses the camper to go, well , camping and quality time. lol. Thats why I would bring the camper back home so much. And I wouldn't have to rent the site then either.