1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

what axle?

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Old

Aug 23, 2012 | 12:22 AM

#1

Kenneykole

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what axle?

My friend have 89 f350 7.3L Diesel 5 speeds manual, and identification says axle - 39 what that? 4:10?

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Old

Aug 23, 2012 | 01:40 AM

#2

Ken Blythen

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From: New Zealand

According to my charts...........3.55, non - limited slip.

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Old

Aug 23, 2012 | 08:21 AM

#3

ctubutis

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Club FTE Gold Member

https://www.ford-trucks.com/forums/1...l#post11225573

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Old

Aug 23, 2012 | 12:34 PM

#4

Kenneykole

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What about 92 F250 7.3l axle-C9?

I'm learning lol.

So is 4.10 smaller than 3.54?

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Old

Aug 23, 2012 | 01:29 PM

#5

Kenneykole

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So non limited slip, sounds like running on one rear tire only. Like if both have traction, will use both for power to take off or just one wheel to move??.

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Aug 23, 2012 | 01:30 PM

#6

Kenneykole

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Would be bad for snow but got 4x4 that's a good thing to have!

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Old

Aug 24, 2012 | 03:41 AM

#7

Ken Blythen

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From: New Zealand

Quote:

Originally Posted by Kenneykole

So is 4.10 smaller than 3.54?

No, it's geared lower (slower) for towing etc.......

4.10 turns of the pinion to 1 full turn of the ring gear
vs
3.54 turns of the pinion to 1 full turn of the ring gear

Quote:

Originally Posted by Kenneykole

So non limited slip, sounds like running on one rear tire only. Like if both have traction, will use both for power to take off or just one wheel to move??.

Not quite sure on your description - but with LS, if one wheel loses traction & begins to spin, the axle automatically 'locks' both axles together temporarily, to improve traction.
There are different systems to do this, but the principle is the same.

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