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Discussion Starter #1 (Edited)
I also need to replace a bent axle and am confused as to how to measure the length. My rear end is not original to my car (69 tempest) but did come from a 1970 vintage car. It uses set9 bearings and has 28 splines and is a bolt on axle. If I order a 29.5" length, am I ok? I'm measuring from the inside of the hub flange to the end of the splines. Or should I be measuring to the outside of the hub flange which is 29.875"
Thanks for your help
 

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Hi

That looks to be a 71 72 8.5 " ring gear axle

I have nice used for 80 shipped ..50 axle 30 shipping

Scott

206 465 9165
 

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How many access holes are in the axle flange?

-if only one access hole, the axle is a '70-72 Pontiac 8.2 axle, and you know what you need. This style of axle is not that hard to find & as A9 bearings next to never seize, as such the standard duty 70-72 Pontiac 8.2 axles are relatively easy to find used, the hot forged versions found in '70-71 HD SST Pontiac 8.2 rears are another story, if missing, next to impossible to find, best to just call Moser & buy a quality replacement set.

-if there ar 3 or 4 access holes in axle flange, the axle could be a '71-72 8.5 A-body axle, it could also be a '70 Type "O" axle, or a '70 BUICK 8.2 axle. All are different rearends & were assembled new with their own style of axle which used an A9 axle bearing. The 1970 Type "O" and the '71-72 8.5 A-body housings were also built to acceept A10 axles.

Of the four different style rearends/ axles listed above there are actually 3 different pitch 28 spline axles. One can't simply install the common '71-72 8.5 Abody axle in the 8.2 Pontiac carrier, it won't slide in. All the above is just one reason, there is no such thing as a BOP 8.2 reared, that unfortunately is a term bred from ignorance & repeated over...

Feel free & post back with how many access holes & I can further identify.
 

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Discussion Starter #4
Wow, thank you for the detailed information! Didn't realize it could be that complicated! There is only one access hole in the flange. Also, the carrier has a casting date code of June 1970. so it would appear that I have the common 70-72 8.2
 

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Wow, thank you for the detailed information! Didn't realize it could be that complicated! There is only one access hole in the flange. Also, the carrier has a casting date code of June 1970. so it would appear that I have the common 70-72 8.2
Will ck what axles have already moved to my new building. If none there, will be hauling more parts in tonight & will ck the housing racks, should have several of this style.
 

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Quickly looked at axles have already moved, no single hole '70-72 Pontiacs have made it this way yet. Picked up a flat on the loader late afternoon, so did not get out to my old warehouse. Flat fixed, heading out for another load little after noon.
 
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