Rear Axle ID ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Baketown Scotty** · 08-14-2014, 04:28 PM

Recently got my new to me 1966 GMC Suburban 4x4. The rear axle has embossed on it 65703-R2 which I have found to be an International Harvester axle. The second line has P 10 29 K and below that is hand stamped 373 (gear ratio?). It has 6 lugs which are reverse thread on the drivers side. I have not checked passenger side.
I would like to know how to describe this axle when I go to buy a new rear brake cylinder to replace the one that is leaking. I've heard some IH axles described as HO52, HO72, R5, R6, R11. Can anyone help with this? Name: Rear axle 4.jpg
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Size: 34.5 KB

Name: Rear axle 4.jpg
Views: 238
Size: 34.5 KB

Name: Rear axle 5.jpg
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Name: Rt Rear Drum.jpg
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08-14-2014, 04:28 PM	#1
Baketown Scotty Junior Member Join Date: Oct 2005 Location: Bakersfield, CA Posts: 304	Rear Axle ID ? Recently got my new to me 1966 GMC Suburban 4x4. The rear axle has embossed on it 65703-R2 which I have found to be an International Harvester axle. The second line has P 10 29 K and below that is hand stamped 373 (gear ratio?). It has 6 lugs which are reverse thread on the drivers side. I have not checked passenger side. I would like to know how to describe this axle when I go to buy a new rear brake cylinder to replace the one that is leaking. I've heard some IH axles described as HO52, HO72, R5, R6, R11. Can anyone help with this?



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