T5 Driven Gears - GM only

Speedo driven gears. OEM AC Delco gears. Your choice of one gear, please specify:

NEW! Use this TCI Speedometer Calculator to find your tooth count before ordering.   Click the link!

Driven Gear Teeth = Drive gear teeth x axle ratio x tire revs/mile
18 tooth brown  dimension -1.75 x .305 x .810
19 tooth white    dimension -1.75 x .305 x .810
20 tooth blue     dimension -1.75 x .305 x .810
21 tooth red       dimension -1.75 x .305 x .810
22 tooth grey     dimension -1.75 x .305 x .810
18-22T .810 diameter gears must be used with a 1.84 OD speedo drive gear.
22 tooth green   dimension -1.75 x .305 x .870 
23 tooth black    dimension -1.75 x .305 x .870
24 tooth yellow   dimension -1.75 x .305 x .870
22-24T .870 diameter gears must be used with a 1.76 OD speedo drive gear.

Speedo Gear Chart

Axle Ratio                   6T                    7T                       8T -Drive Gears

2.73                            -                       -                       18            

3.08                            -                      18                       20

3.27                            -                      19                       21

3.55                           17                     20                       22

3.73                           18                     21                       23

4.10                            19                    22                       24

4.30                            21                    23                       25

4.56                            23                    24

Calculated driven gears are based on normal 26" tires and the formula listed below: