Also see ChevelleStuff.Net for 1964-1972 Chevelles

1967 Camaro Rear Axle Identification

The rear axle identification code consists of a two letter prefix indicating the gear ratio, four digits indicating the assembly date as month/day, and a single letter suffix indicating the manufacturing location. A shift number (1 or 2) along with a letter for the Positraction manufacturer (when applicable). The identification code should be stamped on the bottom or front left or right axle tube either adjacent to the carrier housing or about 8" - 10" inboard from the backing plates.

Example: BP0403G decodes to BP ~ 3.08, 0403 ~ Month [April] and Day [03], G ~ Detroit Gear & Axle.

Plant Codes:
  B ~ Buffalo, New York
  G ~ Detroit Gear & Axle
  W ~ Warren, Michigan
  K ~ McKinnon Industries (not verified)

Positraction Codes:
  D ~ Dana
  E ~ Eaton
  W ~ Warner

Casting Numbers:
12-Bolt Casting #3894860
10-Bolt Casting #3894859

The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Axle ratios shown in this table are non-Positraction and standard drum brakes unless otherwise specified.

Prefix 10-bolt/12-bolt Axle Ratio
BJ 12-bolt 3.07
BK 10-bolt 2.73
BP 10-bolt 3.08
PA 10-bolt 3.08
PB 10-bolt 3.36
PC 12-bolt 3.31
PD 12-bolt 3.07 ~ Positraction
PE 10-bolt 3.08 ~ Positraction
PF 12-bolt 3.31 ~ Positraction
PG 10-bolt 3.36 ~ Positraction
PH 10-bolt 3.55 ~ Positraction
PI 12-bolt 3.55 ~ Positraction
PJ 12-bolt 3.73 ~ Positraction
PK 10-bolt 3.55
PL 12-bolt 3.55
PM 12-bolt 3.73
PN 12-bolt 3.07 ~ w/Metallic Brakes
PO 12-bolt 3.07 ~ Positraction w/Metallic Brakes
PP 12-bolt 3.31 ~ w/Metallic Brakes
PQ 12-bolt 3.55 ~ w/Metallic Brakes
PR 12-bolt 3.31 ~ Positraction w/Metallic Brakes
PS 12-bolt 3.55 ~ Positraction w/Metallic Brakes
PT 12-bolt 3.73 ~ w/Metallic Brakes
PU 12-bolt 3.73 ~ Positraction w/Metallic Brakes
PV 12-bolt 3.07
PW 10-bolt 2.73
PX 10-bolt 2.73 ~ Positraction
PY 12-bolt 2.73 ~ Positraction
PZ unknown 2.73
QA 12-bolt 4.10 ~ Positraction
QB 12-bolt 4.56 ~ Positraction
QC 12-bolt 4.88 ~ Positraction
QD 10-bolt 2.73 - w/Metallic Brakes
QE 10-bolt 2.73 ~ Positraction w/Metallic Brakes
QF 12-bolt 4.10 ~ Positraction w/Metallic Brakes
QG 12-bolt 4.56 ~ Positraction w/Metallic Brakes
QH 12-bolt 4.88 ~ Positraction w/Metallic Brakes
QI 12-bolt 2.73 ~ Positraction
QJ 12-bolt 3.07 ~ Positraction
QK 12-bolt 3.31 ~ Positraction
QL 12-bolt 3.31
QM 12-bolt 2.73 ~ Positraction w/Metallic Brakes
QN 12-bolt 2.73 ~ w/Metallic Brakes
QO 12-bolt 3.07 ~ w/Metallic Brakes
QP 12-bolt 3.07 ~ Positraction w/Metallic Brakes
QQ 12-bolt 3.31 ~ w/Metallic Brakes
QR 12-bolt 3.31 ~ Positraction w/Metallic Brakes
QS 12-bolt 3.07
QT 12-bolt 2.73
QU 12-bolt 2.73 ~ Positraction
QV 10-bolt 2.73 ~ w/Metallic Brakes
QW 12-bolt 3.07 ~ Positraction
QX unknown 2.73 ~ Positraction w/Metallic Brakes
QY 12-bolt 3.07 ~ w/Metallic Brakes
QZ 12-bolt 3.07 ~ Positraction w/Metallic Brakes
Assembly Month - 1st and 2nd numbers
Number Month Number Month
01 January 02 February
03 March 04 April
05 May 06 June
07 July 08 August
09 September 10 October
11 November 12 December

Assembly Day - 3rd and 4th numbers
01...31

Rear Axle Assembly Plant - 5th letter

Code Assembly Plant
B Buffalo, New York
G Detroit Gear & Axle
W Warren, Michigan

08/23/2009
12-bolt rear end casting number 3894860.

08/23/2009
PR ~ 12-bolt 3.31 Positraction w/Metallic Brakes
1013 ~ October 13 (1966)
G ~ Detroit Gear & Axle
E ~ Eaton

09/26/2009
QL ~ 12-bolt 3.31
0309 ~ March 9 (1967)
G ~ Detroit Gear & Axle
1 - 1st shift