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Discussion Starter · #1 ·
It looks like a ford 9 But on the third member it says GM. The only #'s I found are on the third member and they are
A227
8725899GM18
Thanks
 

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Im pretty sure it is an early model housing from 50's 60's if it says GM on it...I have one in my backyard....pretty worthless and fromwhat Ive been told pretty weak...at least that is what I have been told
 

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If it's big and round with a drop out center, and a removable cover with 10 bolts holding it on, it is an
Eaton axle that was used by GM from about 1947 until 1970 or so. If you have a copy of the new 4 Wheeler, look at the rear axle in Brian Waddel's (sp?) Suburban.

[ 09-06-2001: Message edited by: Black Dog ]
 

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i was under the impression that if it's an eaton then it's pretty beefy. kinda like an old school 14 bolt.
 

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Discussion Starter · #6 ·
Originally posted by Black Dog:
[QB]If it's big and round with a drop out center, and a removable cover with 10 bolts holding it on, it is an
Eaton axle that was used by GM from about 1947 until 1970 or so. If you have a copy of the new 4 Wheeler, look at the rear axle in Brian Waddel's (sp?) Suburban.


There is no removable cover on the back side but it looks big and kinda oval round
 

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These are Eaton rearends they used to use.

They are fairly beefy (something like a 12" ring gear), but there are almost no parts for them. I think you can get gears for them, and some had Detroits from the factory, but the part is discontinued now <IMG SRC="smilies/frown.gif" border="0">

It's kinda one of those "don't swap it out, but don't swap it in" kinda things....
 

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It could be outa achevy impalla if it looks like a minature 9" pre 65 I know I've got a few of them.
 

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Yeah, real old Chevy car and truck axles were drop out style. Sounds like it's not an Eaton. I have heard that Toyota copied that old Chevy design on the original Land Cruisers (along with the inline 6 engine), and that is where the original Toy drop out axle design came from.
 

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Originally posted by Black Dog:
<STRONG>Yeah, real old Chevy car and truck axles were drop out style. Sounds like it's not an Eaton. I have heard that Toyota copied that old Chevy design on the original Land Cruisers (along with the inline 6 engine), and that is where the original Toy drop out axle design came from.</STRONG>
I think thats more then a rumor, I've seen a toy diff with chevy carrier in it and a toy 6cyl with chevy intake
 

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It's not an Eaton. They came in 3/4 ton GMC 62-72. They had drop-out plus removable cover. They are bigger than a 14 bolt. 12.25" r&p, 1.55" shafts, and detroit option from 69-72.
 

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Those axles are called Napco (North American
Parts Company). Closed knuckle, dropout 3rd.
Used in GM trucks from the 50's to 59 in 1/2
ton, 3/4 ton, & 1 ton. In 60, they only used
them in 1 tons AFAIK. Seals & bearings are
still available, but the axle shafts are
obsolete. Too bad they didn't have a high
pinion option in them or I'd be runnin' them
in my cruisers <IMG SRC="smilies/frown.gif" border="0">
 

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I forgot to mention that they had a rear
offset diff. to the pass. side & some of
them came w/5.13's. Not sure how low you could go on the ratios though. But way
beefy for my LC's.
 
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