Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1969BISCAYNE 6.5L ENG, AUTOMATIC TRANS, TRANS MFR CD THM400REPAIR AND DIAGNOSIS (SINGLE PAGE)DRIVELINES & AXLESDIFFERENTIALS & DRIVE AXLESREAR AXLES1967 AXLE RATIO CODES
1969 Chevrolet Biscayne 6.5L Eng, Automatic Trans, Trans Mfr CD THM400
1967 Axle Ratio Codes
1969 Chevrolet Biscayne 6.5L Eng, Automatic Trans, Trans Mfr CD THM400SECTION 1967 Axle Ratio Codes
Buick
| Axle Ratio | Conventional | Positive Traction |
|---|---|---|
| 2.79-1 | LA, NL | LN, NY |
| 2.93-1 | OB, OE, NJ | OW, OX, NZ |
| 3, 23-1 | LC, MG, | LP, MT |
| 3.36-1 | LJ, NG | LX, NU |
| 3.55-1 | OR, MW | |
| 3.90-1 | OS, MX, NX | |
| 4.30-1 | OT |
Chevy II
| Axle Ratio | Conventional | Positraction |
|---|---|---|
| 2.73-1 | BZ | BX |
| 3.08-1 | BA | BE |
| 3.36-1 | BC | BF |
| 3.55-1 | BH | BG |
Chevelle
| Axle Ratio | Conventional | Positraction |
|---|---|---|
| 2.73-1 | CL, CP, KD, KQ | CM, KC, KR, KW, CH |
| 3.07-1 | CJ, CX, CY, KS | CD, CK, KX |
| 3.08-1 | CA | CE |
| 3.31-1 | CN, CW, KZ | CF, CO, KY |
| 3.36-1 | CB | CG |
| 3.55-1 | KA, KF, KJ | KB, KG, KH |
| 3.73-1 | CD, CT | CL, CU |
| 4.10-1 | KL | KK |
| 4.56-1 | KN | KM |
| 4.88-1 | KP | KO |
Chevrolet
| Axle Ratio | Conventional | Positraction |
|---|---|---|
| 2.73-1 | EP, ER, GB, GK | EQ, ES, GM, GC |
| 3.07-1 | DR, EM, EN, GD, GG, GL | DF, DS, GF |
| 3.08-1 | DA, GQ | DG, GR |
| 3.31-1 | DD, DE, DV, GE, GI, GN | DH, DW, GJ, GO |
| 3.36-1 | DB, EU | DI, GU |
| 3.55-1 | DC, DQ, EB, EO, GP | DJ, DK, EC, GX |
| 3.70-1 | EK, EX | DL, EY |
| 3.73-1 | EF, EL | DM, EG |
Pontiac
| Axle Ratio | Conventional | Safe-T-Track |
|---|---|---|
| 2.29-1 | UA | VA |
| 2.41-1 | UB | VB |
| 2.56-1 | UC | VC |
| 2 73-1 | UD | VD |
| 2.93-1 | UE | VE |
| 3 08-1 | UF | VF |
| 3.23-1 | UG | VG |
| 3 42-1 | UH | VH |
| 3.55-1 | VJ | |
| 3.73-1 | VK | |
| 4.11-1 | VM |
Tempest
| Axle Ratio | Conventional | Safe-T-Track |
|---|---|---|
| 2 56-1 | WB | YB |
| 2 78-1 | WC | YC |
| 2.93-1 | WD | YD |
| 3.08-1 | WE | YE |
| 3.23-1 | WF | YF |
| 3 36-1 | WG | YG |
| 3 55-1 | WH | YH |
| 390-1 | WK | YK |
| 4.33-1 | YL |
Firebird
| Axle Ratio | Conventional | Safe-T-Track |
|---|---|---|
| 2.56-1 | XB | UN |
| 2.78-1 | XC | UP |
| 2.93-1 | XD | UR |
| 3.08-1 | XE | US |
| 3.23-1 | XF | UT |
| 3.36-1 | XG | UV |
| 3.55-1 | XH | UW |
Corvette
| Axle Ratio | Conventional | Positraction |
|---|---|---|
| 3 08-1 | AR | AL, AT |
| 3.36-1 | AK | AM, AU |
| 3.55-1 | AN, AZ | |
| 3.70-1 | AS | AO, FA |
| 4.11-1 | AP, FB | |
| 4.56-1 | AQ, FC |
Oldsmobile
| Axle Ratio | Conventional | Anti-Spin | ||
|---|---|---|---|---|
| 2.41-1 (1) | SS, SU, ST | TA, TS, TB | ||
| 2.73-1 | QA, RO, QK | QB, RP QL | ||
| 2.78-1 | SA, S2, SK, RA, QV | SB, S3, SL RB, QU | ||
| 2.93-1 | QCRQ | QD, RR | ||
| 3.08-1 | SC, S4, SQ, SM, T4 | SD, S5, SR, SN, RT | ||
| SG, RC, RI, QE, RS | QZ, RN, T5, SH, RD | |||
| QY, RM, QM | RJ, QF, QN | |||
| 3.23-1 | SE, S6, SO, SG | SF, S7, SW, SP | ||
| RE, RK, QG, RU | TD, RF RL, QH | |||
| QW, RG, QO | RV, QX, RH, QP | |||
| 3.42-1 (1) | TL, S8, TP, QI | TM, S9, T9, QJ | ||
| RW, QS, RY, QQ | RX, QT, RZ, QR | |||
| 3.91-1 (1) | TN, T2, TU | TO, T3, TV | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.