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Going through the same issue with my 84 d70hd. I'm not too worried about breaking the carrier but I still have to count the splines. If things look correct I may run a lock rite. Not sure if this will work for the hd
I just don't want the locked all the time except hard surface corners thing myself.
Otherwise I'd just go Detroit and be done.
I think it'd be cheaper to convert to a different axle with a stock g80 than buy a selectable.
I'd be all cool with the selectable if they weren't like $2k now lol.
Really, I don't know if I'll even need to worry about mine now.
My grandpa passed yesterday and I might be getting his truck.
If I do I may sell my dually.
Technically my dually doesn't legally have a high enough tow rating to tow my 4x on my trailer anyway. Which is crazy to me.
My '15 half ton had a higher tow rating lol.
I get it. Sorry to hear about your grandpa. Do you mean the registered gvwr? Not sure how it is where you are but that doesn't seem to make sense. Kinda what a dually is for right?
Could always get a Ferd Super Duty dually rear axle. My '99 F350 has a Dana 80 4:10 gears cuz it has the camper package and a factory clutch style limited slip. Not sure on the width. You would need to do something about the metric bolt pattern. Disc brakes with internal park brake and fits 16" wheels. Most common is 3:73 but I have seen a 6.0L powerstroke dually with 4:10 gears also.
Edit: quick Google search says 72" width. Mines got 295/75R16 tires on oem 6" wide wheels with 2" spacers between and sits right about 100" wide overall.
Sorry about your grandpa. GVWR or GCWR doesn't matter much unless you get way over or commercial. My Ferd is GCWR of like 17k and when I'm loaded with my toy hauler I'm more like 21-23k.
That is not towing capacity.
And I think there's something wrong there.
A 3/4 ton pickup is 8500 gvwr.
The dually one ton rear axle weight rating is 8500. Gawr.
Total is usually 9500 or 10000 .
Gcwr, or gross combined weight rating is what you want, that is combined with the trailer.
In 85 3/4t were between 6600 and 7200 gvw for conventional cab.
3/4t HD and bonus cabs were 8600 gvw
1t were between 9000 and 10 k gvw regardless of cab configuration, dually rear axle, or engine.
There are no listed GCWR or towing numbers in the brochure.
No, advertising has come a long way.
The trucks could always do more but companies now want to attract more people so they raise the numbers.
Braking has improved a lot and suspensions have gotten better so they can do that easier now.
People back home always loaded and towed with these trucks more than double the official limits, but we call those people crazy.
Now we do it with the newer trucks and we are fine
Surprisingly my grandpa's f350 is only rated at 14k. Not as much difference as I thought it would be.
And it's 4x4 so I should be able to back my trailer into it's spot without worry.
Main reason I wanted a locker or something in my dually is that I have to back up a semi steep gravel coated road then into a gravel driveway, to get my trailer where it will be going. So far with just the trailer I didn't have a lot of problems even though it does spin some occasionally. But if my blue truck was on it I may have a problem with a one legger.
What I found surprising was on the Chevy chart I posted, the regular cab 3/4 ton actually has a higher tow rating than it's 1 ton equal counterpart in some cases.
Do t forget today's trucks are also very heavy improving braking traction as well so also raising the towing capabilities. Iirc my '14 silverado with double cab and only an aluminum 4.3L 6 cyl weighs close to 6k and can tow close to 8k. Pretty amazing and I probably wouldn't push that but after all this 6 cyl makes more power than the old 8 cylinders offered at the time.