I did a little research and found out that my statement a few postings back that Mopar rearends were circa 1952/54 is false. The units found in Panzers are 8 3/4". We all knew that. These rears have a round back section with no cover. Their ID#s are 1820657 & 2070742 and they were introduced in 1957. That being said, brings up the question, What rearends were used in the earlier Copar models of 1954/57? Earlier, Mopar made a 8 1/4" but it has a 10 bolt cover. I have never seen a Panzer with a rearend cover. Also Mopar made two different bolt circles, 4" and 4.5" and 3 different pinion shaft sizes and 6 or 7 different ratios depending on application. The ratios vary from a low 4:10 to a high 2:76. Did the factory care about what they put into the new Panzers?

The time line (1957/1960) for the factory to find and purchase these so that they would all be the same is very short and unbelievable.

I got to thinking about the rearend ratios of my two machines so I went out to the garage to check but I do not understand the results. 1 turn off the rear wheel gave me 1 3/4 turns on the pinion for the 1107 and 1 turn gave me 2 revolutions on the T75. So obviously, they have different ratios but the figures do not compute and I do not know my ratios.

Did I do something wrong?

I NEED INPUT.

Dave

**Edited by Savageman, March 22, 2014 - 02:54 PM.**