Rick Renaud

i have a 1993 dodge cummins d250 4x2 with a dana 70 rearend i want to no if i just put longer lugs on if it would work my truck is a posi aswell thanks i really want a dually

wannadiesel

The dually rear is wider. You would need one of those Arrowcraft conversion sets, but I wouldn't trust that to do anything but hold an extra set if tires for pictures.

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NJTman

Firstgenfarmboy did converted his w250 to a dually..

It's in a thread, and he posted pix of the process.

Check him out.

dodgenstein

Dually rears also have much larger inner wheel bearings.

1STGENFARMBOY

Here is just a few obvious differences, the rear end is a full 7 inches wider.







the spring placment is the same on both rearends.

Darwin

Rick Renaud

my rearend looks like the bigger 1 my hub is the same size as the big1

1STGENFARMBOY

the lug nuts will be 5/8th on the dually and 1/2 in on the SRW D70

Rick Renaud

so i guess i cant just put longer lugs and put dullys on it ? i have ben told that my truck has a 1ton rearend and in the pics ive seen my rearend looks like the big 1 in the pics just my lugs are shorter

wannadiesel

Re-read post 2 and 5. :

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Rick Renaud

thanks for the help

1STGENFARMBOY

a dually rearend is 60 inches from the inside of the break backing plate to the other, like Faith said you can go with an arrowcraft spacers, but it's not a good idea to be hauling alot of weight on that setup, it can and has been done but i believe it's a problem wating to happen.

the weight raiting is almost 1,000 lbs more than a D70 SRW.

you need the spacers so the inside dual will clear the springs.

i believe the person that told you you had a 1 ton rearend was misinformed or was just going by the fact that they were both D70's, as i also was preaching that my rear was the same as a 1 ton, untill i got one and dismantled them both side by side and saw all the diffefences.

Darwin

Rick Renaud

ok so i went out yesterday and bought a 1989 d350 1ton dually 360 gas truck to take the rearend out of how can i till if the duallys posi ? and if its not would the power lok out of my dana 70 fit it ? thanks for all the help guys

Onemoparnut

A lot of the gas trucks had tall gear ratios so be careful what ratio it is. Try to spin a wheel and see if the one on the other side spins the same way or the opposite. If they spin the same way it is posi.

Rick Renaud

nope it spins the opposite way could it just be the wrong oil in it ?

1STGENFARMBOY

A gas D350 mite have a D60 if i'm not mistakin. i have been wrong before.