Dana 27AF?

I just got this Dana 27 front axle from another member, and it is a Dana27, but on cleaning it up ontop of the pumpkin it is stamped 27AF. does anyone have a clue what this means on the AF part I am just curious, and the axle is a 4.27 ratio thanks.

 

Available Free R)
Sorry....

 

Is there anyone else that my have a more serious answer please?

 

27A Front?

 

Here's my understanding ....

In 1961 W/O began to install the new model 27 front axles into the CJ's.
The model 27 Spicer was very short lived.
It was back out of production that same year.
By late 1962 the model 27 re-emerged as the model 27A.
This version amounted to little more than a change of the housing cover.
Both 27 and 27A used the W/O # 926816 End Yoke.

Then in 1965 the axle was changed again and became known as the model 27AF.
In its final form the axle was now fitted with the W/O # 936216 End Yoke.
According to numerical parts reference the model 27AF seems to have arrived immediately before the V-6 became available.
All later CJ's both F-4 and V-6 versions through 1971 had the W/O # 936216 End Yoke.

 

I thank you for that great informative article It helps me understand more about the parts I am using and a better understanding of how these jeeps and the parts are used in assembley and upgrades this is the best site so far for tech, info, and parts. Thanks guys and keep up the great support for us others who really do need some guidence once in a while.