Ho33 HO35 HO52 HO72 Eaton ot Chevrolet axles ?

[60-66]

Here’s some info on Chevrolet truck rear axles and who and where they were made . If you read these pages completely, you will notice Eaton did not make the HO52 or HO72 rear axles nor did they make the NoSpin Detroit locker .They were made by Chevrolet Gear and Axle. This also applies to 1960-1962 HO33 and HO35 axles for 1/2 ton . Eaton did offer a limited slip posi unit in 10 series only trucks. Other Posi units in our trucks were offered by Dana.
This Chevrolet information is from 1966 but applies to 60-66 as far as where all axles were built. Eaton did supply GM with some 60 or 70 series and up axles but not 10-30 series.
Use the Suffix Source column to identify where it was made ;
G=Chevrolet gear and axle also known as Detroit gear and axle
W= Warren Mi
B=Buffalo NY

In the White pages under Make , notice where the difference is from Chev to Eaton.

These letters will be stamped in your housing by the axle identification code but not till 1966 did the put the code into the carrier on the HO52 and HO72.

"In 2005, powertrain giant Eaton Corp. purchased Detroit Locker’s parent company and greatly expanded the offerings."