1964 Chevelle Differential Codes
Rear Axle Code information is stamped on the bottom of carrier housing for this year.. a little to the left of the line in this pict and contains a 6 digit code that tells the stock ratio and month / day of build. Format is: LA 0403 for a 3.08 rear ratio built on April 3.
|
Rear Numerical Codes |
|
Code |
Positraction |
Ratio |
|
LA |
|
3.08 |
|
LB |
|
3.36 |
|
LG |
X |
3.08 |
|
LH |
X |
3.36 |
|
YA |
|
3.08 |
|
YB |
|
3.36 |
|
YG |
X |
3.08 |
|
YH |
X |
3.36 |
|
ZA |
|
3.08 |
|
ZB |
|
3.36 |
|
ZC |
|
3.08 |
|
ZD |
|
3.36 |
|
ZE |
X |
3.08 |
|
ZF |
X |
3.36 |
|
ZG |
X |
3.08 |
|
ZH |
X |
3.36 |
|
ZJ |
|
3.70 |
|
ZK |
X |
3.70 |
|
ZL |
|
3.70 |
|
ZM |
X |
3.70 |
1964
