Thread: ford rear end

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i have a 82 f-250 and it was purchased from CSX railroad and its rear end was intended for towing purposes. it has a 351w in it and id like to take advantage of it. any ideas for a new rear end?

Would be helpful to know whether it's a 9 incher or a Dana differential, like a Dana 60 series. It can be a usable peice or some hard effort to make it work with shortening axles and housings and gear swaps and such. Tell us more if you can.

Originally Posted by mrp82391

i have a 82 f-250 and it was purchased from CSX railroad and its rear end was intended for towing purposes. it has a 351w in it and id like to take advantage of it. any ideas for a new rear end?

What ratio - if it's 4.10, I'd probably just leave it, especially if you have the 16"/16.5" wheels and tall tires. If in the 4.30/5.13 - best look for something in a junkyard as these are a H-D Dana full floaters, with 8 lug wheels and not cheap to retrofit new gears.

I had a 82 F250 with a 351\C-6 and it had 3.50 gears and it did not do too bad on gas,even though its a 3/4 ton it might not have a full floating rearend as mine did not. They made them with a C clip type rear along with the full floating type and being from a railroad it probably has the full floating with steep gears. Jeff

Some were what they called a "7700" F250 and were not much more then an F150 with some HD components. Good for a lot more then an F150 for capacity but not up to a "real" F250 with full floater and HD frame, etc. Some, depending on the year, had 7 lug wheels just to make life interesting.