Warning! These pages are for educational and information purposes only.   If you want to modify your vehicle Or steering; take you vehicle to a qualified shop and let them do the work.  If done improperly you could not only lose your life you many take others with you!  This page is Pro-Life, including saving others and your own life, not to mention the un-born children.
Page updated April 2006

Dana 70 Info: Front and Rear axle info

Types of Dana 70's        Applications:  For which Dana 70's came in what vehicles see the B.O.M. info page.

"Model 70 Front and Rear axle can be classified by three groups of pinion offset.  The pinion offset is defined as the distance between the pinion centerline and the differential case centerline.  The following chart describes various models of the axle and the approximate middle years of production"  - Spicer 5312-9 Catalog

* Parts for pre 1971 Dana 70's are much hard to find, and cost shows this.
Model Offset Approximate years Notes
70 0.500" late 50's - 1971 Hard to find parts.
70-B 0.625" 1971 - 1982 3.56" Axle tube diameter
70-BF 0.625" not documented Front Drive axle disc
70-U 0.625" 1982 - present Nice smooth bottom
70-HD 0.625" 1982 - present 4" axle tubes diameter
70-3HD 0.969" 1982 - present  
70-DF -na- not documented Non-drive steering disc
70-IC 0.625" not documented Rigid Independent

    

Dana 70 Front
    Found under light pickup trucks info:
        The different closed knuckle fronts have different Outer Knuckles depending on the joint, Spicer U-joint or Tracta joing.

    Hub lockouts and full time flanges: The old style closed knuckle 70's had lockouts and they used an external style hub. Warn makes 35 spline lockouts for the internal style hub...and the external style 35 spline lockout has long been discontinued.

Spicer info on closed knuckle Dana 70 front axles.

 

    Found under other vehicles info:

        The Dana 70 maybe found under the following vehicles: 
            - IH Farm Tractors, International Harvester (unknown models and years)
            - Scissors lifts
                - Skyjacker rough terrain scissors (Not some Scissors jacks don't have disc brakes, and thus need to replace parts from the spindel out.
                - Manitowoccranecare.com
                - Simons manufacture
            - Ditch witch
            -'Condor' type trucks
            - E350 conversion vans (Companies such as Quigley Motor Co.)
            - Ford f550 forestry trucks or rescue and fire trucks (under 2 1/2ton)
            - Chevy 4500 and 5500 trucks
            - "off-highway equipment" axle also used in forklifts, pavers, tow motors
            -  "I Have heard on the Binder Bulletin that International medium-duty trucks (Loadstar, S-series) from the late 70's/early 80's had a variant of the D70 front that had a 6-by-huge lug pattern, drum brakes, and external lockouts with 35 spline stubs"  - withheld.
 

D70U-4byLars915_POR.jpg (55548 bytes)
Dana70_front_closdeknuckle_nodrums_toobad4u_por_projectsht10006.jpg (105964 bytes)

Dana 70 Rear
    Found under light pickup trucks info:

    Splines:  In my Spicer books all 67+ axle have 35 splines!  Unless they are from a Ford F-350 truck with dual rear wheels.  "1967-1975 Ford F-350's dual rear wheels & other" have axle shafts 34414-1 or 35368-1 and thus 23 splined  1.5" axle shaft.  One note, they sure have a lot of No-Spins in them.

    Dana 70 Facts:  Axle Type: Full floating, carrier type housing and hypoid gears.  Yoke:  D70 has a 1350 flange (3-1-4041x) or a 1350 U-joint (3.4.5731x) or a 1410 U-joint (3.4.5711x) yoke for the drive shaft connection.  Weight with out brakes 300 lbs.  Torque:  Max 7,000 Lbs ; Continuous 1,750 Lbs.  Nominal GAW Rating 7,500 Lbs  Wheel bolt patterns 8 on 6.5"

    Dana 70 HD Facts: Axle housing tubes are 4 inch thick.WMS-WMS is between 70 - 50.75"   Nominal GAW Rating 10,000 Lbs.  Wheel bolt patterns Hub only 5 on 8.0" or Hub and Disk 6 on 8.75"



 



Reference Sites:
http://www2.dana.com/pdf/5312-9.pdf   Dana 70 Maintenance Manual (Include open and closed kingpin front and rear axles)
http://www2.dana.com/pdf/70HD_axle.pdf
http://www2.dana.com/pdf/70B_axle.pdf
http://Quigley4x4.com/ 
http://sixstates.com/
http://www.geocities.com/lorimaryrose/dana70front.html  3/4tonYJ from POR adding u-joints to his tracta joint Dana 70
http://www.pirate4x4.com/tech/billavista/D70/D70.htm  BillaVista rear axle Dana 70 article.
http://www.manitowoccranecare.com/Technical_Support/Manlift/comb_scissors/images/sm3884.jpg  Scissors lifts

 

Dumb info

Dana 70 fronts for sale.
1800 233 9358, place is called Quigley Motor Co. out of Manchester PA
Ask for Tiger, he's the guy that hooked me up. I don't know if I'll be able to do the coil spring suspension as the outside tube diameter is about 3.55" Still debating on what to do
 

 

  Warning! These pages are for information only.   If you want to modify your vehicle Or steering; take you vehicle to a qualified shop and let them do the work.  If done improperly you could not only lose your life you many take others with you!  This page is Pro-Life, including saving others and your own life, not to mention the un-born children.


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  Warning! These pages are for information only.   If you want to modify your vehicle Or steering; take you vehicle to a qualified shop and let them do the work.  If done improperly you could not only lose your life you many take others with you!  This page is Pro-Life, including saving others and your own life, not to mention the un-born children.

Copyright 2002 All International Rights Reserved.  This document may not be copied or published in anyway without prior written permission.