Rear Axles

By: Charles E. Giannetta




PONTIAC offered 6 different Rear Axle Ratios for the 69 Grand Prix

These codes are stamped on the driver's side axle tube next to the differential housing



Ratio Combination Ring:Pinion Regular Duty Open Code Medium Duty Open Code Medium Duty Posi Code Heavy Duty Posi Code

2.93

41:14

2D

4D

5D

n/a

3.08

40:13

ZE

4E

5E

n/a

3.23

42:13

ZF

4F

5F

n/a

3.36

37:11

n/a

4G

n/a

7G

3.55

39:11

n/a

4H

n/a

7H

3.90

39:10

n/a

n/a

n/a

7K

n/a = Not Available




Axle Ratio Finder

Enter the number of teeth on each gear and then CLICK OUTSIDE the box


# of Ring Gear Teeth ( larger gear )  
# of Pinion Gear Teeth ( smaller gear )  
Ratio =   :1




FACTS About

HOME