Speedometer Gear Chart

VK Commodore

Rear Axel Transmission Speedo Driven Gear Tyre Option Numbers
P/O Ratio P/O Speedo Drive Gear Colour Colour Number of Teeth QBC QCJ QCH QCR QBD QST QQY QFL QEU QBY QQN
G70 2.60:1 M40 10 Teeth Yellow Dark Blue

Green

 22

21

   X

 

 X

 

 X

 

       X

 

  

X

    
GU4 3.08:1 MC6 7 Teeth Brown Red 18 X X X X   X   X   X X
    M40 9 Teeth Blue Red

Dark Blue

 23

22

 X

 

 X

 

 X

 

 X

 

   X

 

   X

 

  

X

 X

 

 X

 
  L6 M76 8 Teeth Pink White

Green

 20

21

  

X

 X

 

 X

 

 X

 

   X

 

   X

 

   X

 

 X

 
  V8 M40 10 Teeth Yellow Light Blue 25   X X X       X X    
  3.36:1 M76 8 Teeth
Pink		 Dark Blue 22 X X X X   X   X   X X

Tyre Option Numbers

QBC BR60 H15 QCR CR78 S14 QQY 175SR13 QEU ER70 H14
QCJ CR70 H14 QBD BR78 S13 QFL P205/60 HR15 QSY BR78 S14
QCH CR78 H14 QST 165SR14     QQN P175/75 SR14

VC Commodore

Rear Axel Transmission Speedo Drive Gear Speedo Driven Gear QBD QQY
3.90 M40 7 Teeth Red 24 Yellow X X
  MC6 5 Teeth Black 17 Brown X X

VB Commodore

Rear Axel Transmission Speedo Driven Gear Tyre Option Numbers
P/O Ratio P/O Speedo Drive Gear Colour Colour Number of Teeth QBC QCJ QCV QCH QCR QBC XCH XCR ZCH ZCR
G70 2.60:1 M41 17 Teeth Steel Blue Red 37 X   X X     X   X  
GU7 2.78 M40
&
L6		 8 Teeth White Pink

Brown

 19

18

 X

 

 X

X

   X

X

 X

X

     X

X

    
    M40
&
V8		 8 Teeth
Blue		 Green

White

 21

20

 X

 

 X   X     X   X  
GU4 3.08 - L6 MC6

M40
M20

 7 Teeth Brown

8 Teeth White

 Red

Green
White

 18

21
20

 X

X

 X

X

   X

X

     X

X

   X

X

  
  3.08 - V8 M41


M20
M21


M40

 17 Steel Blue

8 White

9 Blue

 Purple
 

Green
White


Red

 43


21
20


23

 X
 

X



X

 X


X



X

   X


X

 

X

     X


X

 

X

   X
 

X

 

X

  
GV4 3.36 M20
M40

M21

MC6

 8 White

8 White
7 Brown

 DK Blue

DK Blue

Blue
Yellow

 22
 

22


20
19

 X


X

X

 X


X

X

    

X
 

 X

 


X

  
X		 X


 

X
X		 X

 


X
GV7 3.55 M20 8 White Red
Yellow		 23
24
X		 X     X     X   X