1967 Drivetrain ID Number Information

Drivetrain ID Number information for the 1967 First Generation Firebird including engine codes, transmission codes, axle codes, carburetor codes, distributor codes, and head casting codes.

1967 Engine Identification Codes

Code Cyl. Disp. H.P. C.R. Carb. Trans. Description Qty. Built
WI 8 400 325 10.75:1 4 BC Man. Firebird 400 Ram Air  
WC 8 326 250 9.2:1 2 BC Man. Firebird 326  
WH 8 326 250 9.2:1 2 BC Man. Firebird 3261  
WK 8 326 285 10.5:1 4 BC Man. Firebird H.O.  
WO 8 326 285 10.5:1 4 BC Man. Firebird H.O.1  
WQ 8 400 325 10.75:1 4 BC Man. Firebird 400 Ram Air1  
WU 8 400 325 10.75:1 4 BC Man. Firebird 4001  
WZ 8 400 325 10.75:1 4 BC Man. Firebird 400  
XI 8 326 250 9.2:1 2 BC Auto. Firebird 3261  
XN 8 400 325 10.75:1 4 BC Auto. Firebird 400 Ram Air  
XO 8 326 285 10.5:1 4 BC Auto. Firebird H.O.1  
YJ 8 326 250 9.2:1 2 BC Auto. Firebird 326  
YM 8 326 285 10.5:1 4 BC Auto. Firebird H.O.  
YT 8 400 325 10.75:1 4 BC Auto. Firebird 400  
ZD 6 230 215 10.5:1 4 BC 3-spd/Man. Firebird Sprint  
ZE 6 230 215 10.5:1 4 BC Auto. Firebird Sprint  
ZK 6 230 165 9.0:1 1 BC 3-spd/Man. Firebird Standard  
ZN 6 230 165 9.0:1 1 BC Auto. Firebird Standard  
Engine Identification

V-8: Find code stamped on the block in front of the right bank of cylinders.

6-Cylinder: Find code stamped on cylinder head contact surface of the block behind the oil filler pipe.

123456 = Production Number
WC = Engine Code

1 Air
Note: Conflicting information for following codes. One source lists them available but have not been able to confirm with other sources: ZF, ZG, ZL, ZM, ZR, ZS.



Transmission Identification Codes

Code Description Engine Comments Location
LF 2-Speed Automatic 230 6 Cyl. – 1 BC, W/O AC Stamped on low servo cover1
LG 2-Speed Automatic 230 Sprint – 4 BC, W/O AC Stamped on low servo cover1
LH 2-Speed Automatic 230 6 Cyl. – W/AC Stamped on low servo cover1
MA 2-Speed Automatic 326 2 BC, W/O AC Stamped on low servo cover1
MB 2-Speed Automatic 326 H.O. – 4 BC, W/O AC Stamped on low servo cover1
MC 2-Speed Automatic 326 326 and H.O. – W/AC Stamped on low servo cover1
PQ Turbo Hydra-Matic 400 400 W/Ram Air Stamped on metal tag located on right side of trans.2
PR Turbo Hydra-Matic 400 326 4 BC Stamped on metal tag located on right side of trans.2
PV Turbo Hydra-Matic 400 326 2 BC Stamped on metal tag located on right side of trans.2
PX Turbo Hydra-Matic 400 400 W/O Ram Air Stamped on metal tag located on right side of trans.2
1 Identifies year, trans. model, and date built (ie: 67LH135)
2 Identifies year, trans. model, and trans. serial (ie: 67PR1234)



Axle Identification Codes

Code Ratio Type
UN 2.56 Locking
UP 2.78 Locking
US 3.08 Locking
UT 3.23 Locking
UV 3.36 Locking
UW 3.55 Locking
UX 3.90 Locking
UY 4.33 Locking
XB 2.56  
XC 2.78  
XD 2.93  
XE 3.08  
XF 3.23  
XG 3.36  
XH 3.55  



Carburetor Identification Codes

Code Type Engine Comments
7027071   326 Manual
7037071   326 Manual W/AC
7027062   326 Automatic
7037062   326 Automatic W/AC
AFB4243S Carter 326 H.O. Manual
AFB4245S Carter 326 H.O. Manual W/AC
AFB4246S Carter 326 H.O. Automatic
AFB4248S Carter 326 H.O. Automatic W/AC
7027273   400 Manual
7037273   400 Manual W/AC
7027277   400 Manual Ram Air
7037277   400 Manual Ram Air W/AC
7027272   400 Automatic
7027276   400 Automatic Ram Air



Distributor Identification Codes

Code Engine Comments
1111164, 1111199 326  
1111165, 1111238 326 HO  
1111250, 1111252,
1111253, 1111254		 400  



Head Casting Identification Codes

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