1965 K10 Rear Diff Advice - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MNK10 · 06-26-2022, 05:19 PM

I'm wondering if anyone has any info on which rear diff my 1965 K10 has. I believe that its an Eaton, maybe the Ho35 or 32? It has a split case with a gasket on the front and one on the rear cover and when I went in to change gaskets I'm realizing that my pinion bearings are shot. I would like to rebuild it but have never done the job and don't know what I need to setup properly with the right amount of shims and preload. Any advice would be greatly appreciated!! I'll attach a few photos of the diff in question.

As a side note I believe that the front diff is a Spicer 5f-44 which needs new axle bearings as well, so chances are I'll need to do a rebuild on both. Which specific tools will I need as well?

**The Rocknrod** · 06-27-2022, 07:41 AM

The MG tells me it may be a 61-62 K10 4WD 3.90 ratio. I could be reading it wrong?

06-26-2022, 05:19 PM	#1
MNK10 Registered User Join Date: Jul 2021 Location: North Metro, MN Posts: 5	1965 K10 Rear Diff Advice I'm wondering if anyone has any info on which rear diff my 1965 K10 has. I believe that its an Eaton, maybe the Ho35 or 32? It has a split case with a gasket on the front and one on the rear cover and when I went in to change gaskets I'm realizing that my pinion bearings are shot. I would like to rebuild it but have never done the job and don't know what I need to setup properly with the right amount of shims and preload. Any advice would be greatly appreciated!! I'll attach a few photos of the diff in question. As a side note I believe that the front diff is a Spicer 5f-44 which needs new axle bearings as well, so chances are I'll need to do a rebuild on both. Which specific tools will I need as well? Attached Images

06-27-2022, 07:41 AM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: 1965 K10 Rear Diff Advice The MG tells me it may be a 61-62 K10 4WD 3.90 ratio. I could be reading it wrong? Attached Images __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

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