Front diff help

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Jul 25, 2017 | 06:51 PM

Tony McDonald

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Front diff help

Need some help trying to identify my front diff. It's in a 73 f350 napco

Jul 25, 2017 | 09:09 PM

smle

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Joined: Apr 2014

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From: Oakland, AR

Possible it is a napco, rare, but not unheard of. That being the case, the NAPCO Owners Association may be able to help you with ID as well with parts.

Jul 25, 2017 | 10:46 PM

1TonBasecamp

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From: San Jose, CA

Even though it has the cover, is the diff "chunk" removable from the backside also? I seem to remember seeing them that way, but not sure.

Good luck!

Paul

Jul 25, 2017 | 10:51 PM

smle

Fleet Mechanic

Joined: Apr 2014

Posts: 1,790

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From: Oakland, AR

How about a pic of the driveshaft side.

Jul 25, 2017 | 11:15 PM

ZarK-eh

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From: like subarctic, brrr man!

yea...

more diff pics! ... hurr

Jul 26, 2017 | 12:04 PM

uniwagon

Mountain Pass

Joined: Mar 2007

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That is an Eaton rear end,mostly used by GM and for 4x4 conversions by Napco
C.

Jul 26, 2017 | 05:30 PM

Tony McDonald

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I just have this one picture of the front of the diff. What i am actually looking for is a part number conversion for the locking hubs. From the m23 to a part number that warn has now
Thanks

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Jul 27, 2017 | 11:32 AM

1TonBasecamp

Lead Driver

Joined: Jul 2017

Posts: 9,576

Likes: 1,161

From: San Jose, CA

Quote:

Originally Posted by uniwagon

That is an Eaton rear end,mostly used by GM and for 4x4 conversions by Napco
C.

That's the name I couldn't think of!
Thanks uniwagon.

A friend had an early 4wd Chevy 3/4t pickup that had one like that in the rear. Don't remember what it had in the front, but judging from the pics here, it might have been the same.

Interestingly it was the '67-'72 body style, which I thought by then had already been using Dana setups in the front. Maybe it was a very early one before GM had their own, or perhaps it was a conversion from a 2wd?

Anyway, glad you're memory is still working!

Paul