Reference Details
- Common issue
- Incorrect ratio or added aluminum cover
- Confidence
- documented
- Correct value
- W-30 axle ratio should match documented drivetrain path; 1971 differential identification is stamped on the right-hand axle tube front surface, with W-30 limited-slip applications listed as TM for 3.42:1 and TO for 3.73:1 in the parts-catalog differential identification table; W-27 aluminum cover remains an option/cue
- Where to check
- Right-hand axle tube front surface for stamped differential identification code; build sheet/order paperwork for option path; differential cover for W-27 cover if equipped
