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  #1  
Old February 16th, 2007, 07:22 PM
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Default Need some axle info

Ok, for you brain-trust guys - who has the measurements on our axles? I have a chance to acquire a Dana 70 from a 77 F350 with a 4.10 ratio and a limited slip.

Here are the measurements from the seller - question is will this fit without major mods?

8 lug axle too.


For the measurements I came up with about 51 between the backing
plates and about 41 on center for the spring perches. Those measurements
are with a slight bend in the tape over the pumpkin so not exact, but
ballpark. The overall length is about 72 inches.
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Old February 16th, 2007, 07:26 PM
mgmorrison mgmorrison is offline
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I don't have the measurements, but that is a very narrow axle...
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Old February 17th, 2007, 05:48 AM
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I happen to have a stock D70 in the shop..will have measures for you in a little while.
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Old February 17th, 2007, 07:44 AM
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We'll have to see what Jon comes up with, but I think that is to narrow too.
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Old February 17th, 2007, 07:49 AM
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Stock dana 70 is 56.5" (me on my back under the truck with a tape) from inside of backing plate to inside of backing plate. So that axle sounds to be very narrow if the measurement is accurate. I have a dana 70 in the back of my truck that I am putting disc brakes on and measured it and got a healthy 58". I can't find a page to decipher the BOM on this axle so if anyone has a dana book here it is 3 25 6 c6 BOM 603556 2
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Old February 17th, 2007, 08:29 AM
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I just asked the guy to verify end-to-end measurements - 72 sounds pretty narrow to me as well, especially on a 1-ton truck.
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Old February 17th, 2007, 09:44 AM
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Sorry for the delay....small crisis ends...

Inside of backing plate to inside of backing plate: 55½ inches.
Center of spring pad to center of spring pad: 50½ inches.

In case it matters...

Wheel mounting surface to wheel mounting surface: 72½ inches.
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Old February 17th, 2007, 07:49 PM
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That measurements sound right for a dual wheeled truck. They tend to be a little narrow. Also Ford trucks of the early to mid 70's seam to be narrower the chevy or dodge truck. Thats just my observation.

Tom
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Old February 17th, 2007, 09:31 PM
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How much work would it be to put in a pair of Dodge D70 axles?
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Old February 18th, 2007, 04:49 AM
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I memory serves me correctly, the D70 from a Dodge motorhome fits the spring mounts and is in the right pace at the wheel well. I believe they are originally setup for duallys....
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