FS - 3.64 Differential parts

[Sven]

I took apart a 3.64 (open) differential from my 1972 3.0 CS. If anyone wants any of the parts please let me know, otherwise into the rubbish/recycle bin they go. $5 plus shipping costs.

The rear bearing surface of the case became very pitted, so the rear bearing is suspect. The pinion gears (11 and 40 teeth) show no wear. The mileage on the car is ~112k. I am not sure if this in the original differential because I thought these cars came with the 3.46 ratio differential.

I replaced the differential with a Metric Mechanic LS and therefore do not need it.

 

[IS3FIFTY]

I am not sure if this in the original differential because I thought these cars came with the 3.46 ratio differential.

According to the repair manual the 3.64 ratio was for the 2.5CS - all 2800CS and 3.0CS came with the 3.45 ratio.
The ratio should be stamped below the oil filler plug (however you confirmed the 40- and 11-teeth pinion gears, which make up the 3.64 ratio ;-) ).

 

[HB Chris]

U.S. automatics came with the 3.64.