I found a single wheel dana 70 in an (79?) f-350 2x4 and am wondering if it will fit my 771/2 f250 4x4 whose rear end is failing. I'm picking it up for $85 so moving the spring mounts could be done. Also the door key said it was an h5 are these 4:10 gears?

 

My book says H5 is a 3700lb Ford Limited slip axle, most likely a 9". The door on the truck possibly could of came off another truck. The 4.10 Dana70's code is 27.

 

The door paint matched well. It is without a doubt a dana 70. Maybe I read the wrong part of the key. I'll find out tomorrow when I get a look during the daylight hours. Thanks

 

Also the door key said it was an h5 are these 4:10 gears?

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Door Key ???????

I think you mean the rating (or data) plate
Which would mean it isn't a 79 as that code doesn't apply to that year.


Usually an H series axle is a 9"
Later in the 90's an H5 = 4.10. 3800 FORD LIMITED SLIP 1991


Does the diff have an inspection cover on the back ?

How many studs on the axles ?

 

H is/always was a ford 9". make sure that 350 does not have a D60 some did come like that.

 

In 1977 H5 is the code for a heavy duty truck Rockwell R-171 23000# 5.29 ratio axle. H5 is not a valid code for a 77 light duty truck. H2, H4, and H9 are valid codes for 77 light duty trucks, all 9" locking axles. H1-9 are all used for 77 HD truck Rockwell axles. HH and HQ are used in medium duty trucks for Eaton axles. Not much of a way to get an Eaton or Rockwell confused with a 9".

 

I figured out what when wrong. The code is D7A. it came off a 78 or 79 f-350 camper special.

 

The A means an adjustable steering column (TILT wheel) with Power Steering

 

to solve the mistery,pull the cover off the diff and read what the ring gear says.then you will know for sure the gear ratio,and if the diff is limited slip,or opened.by removing the cover,you will be able to see if the diff needs work,or if it would be okay to just install it. at this age ,you dont even know if the door plate matches the actual diff anymore.-billy

 

Problem solved. It is a dana 70 limited slip with 4:10 gears. I opened the cover and the ring looks good. Thanks for all of your help