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Can I put 8 Lug hubs and axles on a 1999 F-250 Light Duty with 7 Lugs
I don't see why not - you're just changing axles, though "just" is probably not the best way to describe that. Be sure to check track width front to rear, it has to stay the same.
today i seen a F-150 and on the tail gate under XLT it said 7700? is this a heavy duty F-150 kinda like a F-250 but not SD F-250? what are the specs? it was a beast!
I could really use ANY AND ALL info I can get on this. Its XLT V8 TRITON and I can't even get the FORD dealers mechanics to work on it. It ran but needed coil packs and plugs. But b4 I could get that done it just wouldn't start 1 day. New battery, tries to start but just wont fire up. Help please. I dont even know what book to get as it's this weird beast that is not listed anywhere except in 1 sentence mentions here and there.
The 7700 was the heavy duty payload package offered by Ford on the F150 from 2000-2004 (as the Heritage model in 04). It replaced the F250LD that was offered from 1997-1999.
The upgrades over the normal F150 included larger front brakes (same swept area as the Lightning), bigger bore master cylinder, stiffer front and rear suspension (only 4x4 F150 factory rated for a plow), 10.25" Visteon rear w/ 3.73 gears (4.10s were a 2nd option from '02-'04), thicker/stiffer box frame, heavier 7 lug steel wheels with load rating "D" tires mounted on them, & with 4r70w autos a larger tranny cooler or 4r100 autos a tranny cooler period, and what is known as super engine cooling (bigger radiator). It only came with a 5.4 auto tranny package.
The 7700 4x2 138.5" wb truck (long bed, regular cab) had a factory payload rating of 3220 lbs - keep in mind that once you start adding options, gas, people, fluids that rating drops off.
My 7700 4x4 XLT 138.8" wb truck (short bed, supercab) has a factory rating at 2725lbs. I have weighed the truck with canopy, me, and a half tank of gas at 5400lbs, iirc. So, in reality the payload is more like 2300lbs. Still that's over a ton.
You want any more specs or exact numbers as far as dimensions and such I've got most of them.
-Kerry
Would you know what the factory specs are on the torsion bars?
after a ton of research, here's what I am pretty sure of:
from 97-2003, Ford had 2 F250's. the "old generation" F250 and the "new generation" F250, the super duty. to avoid confusion, they called the old one the F150/7700. not sure why, since you could still buy the old one as an F250, so i'm not sure what that accomplished. i know that sounds ridiculous, but i have seen pictures of 97-03's F250 "old generation" for sale. other than the F250 badge instead of the F150/7700 badge, they are the same truck.
an earlier post pretty much nailed the mechanical differences between the 7700 and the actual F150.
regarding the 04 Heritage, my research has yielded very confusing results. if i had to bet, I'd say it was the half ton F150 they had in inventory they just had to sell off, not F150/7700s. i have not found any authoritative sources to say different, though you can find various posts claiming otherwise, I just don't consider them authoritative - when I dig into them, it comes down to "i read on this other forum...". the closest I've been able to find for an 04 7700 is that a CNG bifuel version might have been made for Canada, but what i've seen is only suggestive.
I would be very interested in any authoritative sources, or any sources I have not seen.
Edit: at the very least, the 7700 was produced as a heritage in Canada in a CNG biofuel version in 2004. For sure. There's one for sale; the VIN checks out.
Having owned my 2000 F150 series 7700 since new, I can help with some details that may not be known. The F150 7700 was made for the Canadian market, and in my case, the unit was made in Canada. Because of the Canadian motor vehicle rules, any trucks manufactured as 3/4 ton are subject to licensing fees and taxes, so they are badged as F150. The 7700 series has 3.73 gears with a Dana 44 IFS front axle and Sterling 10.25" rear axle with 35 spline axles-absolutely huge! The rear brakes are oversized disc, larger than the newer F150's, but smaller than my 2004 SD. The front suspension is a torsion-bar design, the radiator is a "super-cooling" model and the transmission cooler is also much larger than that of the same year F150. The 7-lug wheels and discs are readily available as they are the same as the F250 LD, but NOT the same as the lightning. The Lightning had a different third member, and they were the short-lived 9.75" gear with 3.55 LS gears. They only made the F250LD and the F150 7700 model with the 4-door extended cab, but I have personally seen a few F250LD with 2-door standard cab and a long bed-so I KNOW they exist. The truck gets about 1-2 miles LESS per gallon than my friends base F150 models with the 5.4, but they all have the 3.55 gears. You could order the base F150 with 3.73 gears, but this was not very common. The truck has a much stiffer suspension, but when you have the back loaded with wood (or whatever) it rides MUCH smoother. This has been my favorite truck of all time, I will probably never get rid of her, but pass it to my kids. I have people ask me monthly if i will sell it, it is that unique. Not that it matters, but EVERY one of these trucks I have seen over the last 21 years have been the same color (Cardinal Red) or Maroon color with silver trim/ two-tone paint. All the shocks and suspension components are specific to the LD/ 7700 models, and you need to walk the parts people through the ordering process when getting parts or you WILL get the wrong parts. I have never seen another body style F150/ F250LD with the 7-lug wheels, and all that I have seen are badged as such. I am not familiar with the "Heritage" edition, but the ones I have seen are the newer body style. I hope this helps clear a few things up.
To add even more confusion, Ford also sold the F250 in the heritage body style in Mexico until 2009. I would love to have the super duty looking grill insert but I have a 1998 which has the grill that goes straight across and doesn't dip into the bumper like the 99-2004's do.
My 03 needs a new or not bend Axle and I need help find out what type axle it has, I looked at the plate on it and the only number I can pick is a V115A, must web pages tell me it is a 3.73 ratio axel but they don't have and ID# V115A as a replacement. what can I replace it with. I like my truck and just had the engine rebuild so I don't want to let go of it. Help
My 03 needs a new or not bend Axle and I need help find out what type axle it has, I looked at the plate on it and the only number I can pick is a V115A, must web pages tell me it is a 3.73 ratio axel but they don't have and ID# V115A as a replacement. what can I replace it with. I like my truck and just had the engine rebuild so I don't want to let go of it. Help
Your axle (if a series 7700 or LD 250) is a 35-spline and the rear gears are Sterling 10.25" . Never replaced the axle, but when it was out of the truck during a posi clutch pack replacement, I was astonished at just how big it was. Same as my Super Duty 6.0, but the Sterling 10.25" morphed into a 10.5" but still take the same gear sets and clutch packs.
I hope this helps....
Last edited by Brett501e; Mar 23, 2026 at 11:48 AM.
Reason: spelling
