'63-'64 Corvette Dana Posi-traction Units
The '63-'64 Corvette used a Dana Posi-traction unit in the new IRS rear axle. Although the unit was prone to breakage and most have been replaced with later-model Eaton units, the usage of the units necessitates their inclusion here.
|Posi-traction Casting Numbers |
|Axle ||Casting No. ||Series ||Gearing |
|Corvette '63-'64 ||C-32324 ||3 ||3.08 to 3.70:1 |
| ||C-32459 ||4 ||4.11:1 |
|'64 Corvette Rear Axle Codes |
|SeriesSource ||Ratio ||Description ||Code || |
|837/867 ||3.36:1 ||Manual or Powerglide ||CA ||W |
| ||3.36:1 Posi ||Manual or Powerglide ||CB ||W |
|3.55:1 Posi ||4-speed ||CC ||W |
|3.70:1 Posi ||4-speed ||CD ||W |
|4.11:1 Posi ||4-speed ||CE ||W |
|4.56:1 Posi ||4-speed ||CF ||W |
|3.08:1 Posi ||4-speed ||CJ ||W |
|3.70:1 ||4-speed Close Ratio ||CX ||W |
|3.08:1 ||4-speed Wide Ratio ||CZ ||W |
Special Note: This Corvette came from the factory originally with a 327/300hp engine, so that's been used for this edition of "Corvette By The Numbers."
From Corvette By The Numbers by Alan Colvin, published in 2002, used with permission of Robert Bently Publishers.