axle decoding

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Oct 29, 2004 | 04:43 PM

Thread Starter

Junior User

Joined: Feb 2001

Posts: 96

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From: Pasco, WA

axle decoding

could you please help me decode an axle code on a 65 f350. it has axle code 23 and i am wonder what that means,

I have looked throught the posts and not seen the number 23 any where
thanks

MC

Oct 29, 2004 | 06:39 PM

trouble

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Joined: Aug 2000

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From: Rolla USA

There are numbers stamped on the right hand tube of the axle housingShould be a 7 digit number. This will be a identifing number , maybe you can get it

Oct 29, 2004 | 07:01 PM

barry

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Joined: Dec 1999

Posts: 2,813

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From: Connecticut

I can't find "23" in my parts book. Check and see if that's correct. I looked by application and 65 F-350's start with 4.10 and go lower as in 4.10, 4.56, 4.88, 5.13 or 5.87 ratios. It's a spicer rear end. There is also a tag bolted to the center circle of bolts. See what you can find and post it.

Barry

Oct 30, 2004 | 02:29 PM

camperspecial65

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Joined: Mar 2004

Posts: 4,375

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From: seattle

MC, In my books I find that the code 23 is a Spicer 70 5.13 ratio single speed capacity is 7.4M according to my parts book
That code is same for 66 too....67 up to 68-9 issame ratio but a slightly lighter cap of 7.2M
The date of my book is 9/68

Nov 2, 2004 | 12:20 AM

Thread Starter

Junior User

Joined: Feb 2001

Posts: 96

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From: Pasco, WA

camperspecial65,

thanks for the info, i am looking for a donor axle for my 60 f350 that has a bettter "driving" ratio than my Rockwell 5.83 axle that is currently in place.

I have always wondered what those numbers after the ratio's meant, how do the 7.2 and 7.4 and other numbers correlate to capacity?

My shop manual lists my axle as a 5.83 - 7.2M

thanks again

MC