Speedometer Gears
| Tech Stuff:
Click
here for instructions on figuring out which gears will work
for your application. |
General Motors Speedometer Gears
GM Drive Gears
| TCI Drive Gear Part # |
Tooth Count |
Color |
Ref.
OEM # |
Notes |
Clip
Used |
Applications |
Power-
glide |
200,C |
125,C
2004R |
250,C
350,C
375B |
TH425 |
375
400
475 |
700R4 |
880014
 |
8 |
Black |
6261783 |
1.19"
shaft,
Style A |
5/16" clip,
880024
|
|
|
|
69-86 |
|
|
|
880015
|
10 |
Purple |
6261785 |
1.19"
shaft,
Style B |
5/16" clip,
880024
|
|
77-90 |
|
73-86 |
|
|
|
880016
|
18 |
Green |
6260037 |
1.19"
shaft,
Style C |
7/16" clip,
880026
|
|
|
|
69-86 |
|
|
|
| N/A |
19 |
Natural |
8640188 |
1.19"
shaft,
Style C |
7/16" clip,
880026
|
|
|
|
77-86 |
|
|
|
880018
|
15 |
Grey |
8642620 |
1.19"
shaft,
Style B |
5/16" clip,
880024
|
|
|
|
|
|
|
82-93 |
880027
|
17 |
Red |
8640517 |
1.19"
shaft,
Style B |
5/16" clip,
880024
|
|
|
|
|
|
|
82-93 |
880019
|
15 |
Grey |
8629547 |
Steel,
Style D |
press-on |
|
|
|
|
|
65-89 |
|
| N/A |
16 |
Orange |
8623311 |
Style D |
|
|
|
|
|
|
65-89 |
|
| N/A |
17 |
Grey |
8623312 |
Steel,
Style D |
press-on |
|
|
|
|
|
65-89 |
|
880038
|
10 |
Green |
8639906 |
Style E |
N/A |
|
|
81-90 |
|
|
|
|
880039
|
11 |
Orange |
8634965 |
Style E |
N/A |
|
|
81-90 |
|
|
|
|
880040
|
12 |
Red |
8634935 |
Style E |
N/A |
|
|
81-90 |
|
|
|
|
880041
|
13 |
White |
8634934 |
Style E |
N/A |
|
|
81-90 |
|
|
|
|
|
GM Driven Gears
| TCI Driven Gear Part # |
Tooth
Count |
Color |
Ref.
OEM # |
Notes
(L x shaft Ø x gear Ø) |
| Housing
Used |
Applications |
|
Power-
glide |
200,C |
125,C
2004R
325,C |
250,C
350,C
375B |
TH425 |
375
400
475 |
700R4 |
880000
|
18 |
Brown |
3987918 |
2.25"x.305"x.785",
Style F |
880021 |
62-73 |
76-84 |
|
71-84 |
|
76-79 |
|
880001
|
19 |
Natural |
3987919 |
2.25"x.305"x.800",
Style F |
880021 |
62-73 |
77-84 |
|
71-84 |
|
77-79 |
|
880002
|
20 |
Blue |
3987920 |
2.25"x.305"x.800",
Style F |
880021 |
62-73 |
76-84 |
|
71-84 |
|
77-79 |
|
| N/A |
21 |
Red |
3987921 |
2.25"x.305"x.800",
Style F |
880021 |
62-73 |
76-84 |
|
71-84 |
|
77-79 |
|
880004
|
22 |
Grey |
3987922 |
2.25"x.305"x.810",
Style F |
880021 |
62-73 |
77-84 |
|
71-84 |
|
76-79 |
|
880005
|
23 |
Black |
3980346 |
1.75"x.305"x.865",
Style F |
880021 |
62-73 |
76-79 |
|
|
|
|
|
880033
|
26 |
Brown |
25502669 |
3.140"x.305"x.950"
Style G |
N/A |
|
|
79-93 |
|
|
|
|
880034
|
27 |
Black |
410731 |
3.140"x.305"x.960"
Style G |
N/A |
|
|
79-93 |
|
|
|
|
880035
|
28 |
Yellow |
416765 |
3.140"x.305"x.960"
Style G |
N/A |
|
|
79-93 |
|
|
|
|
880006
|
29 |
Green |
403999 |
3.140"x.305"x.960"
Style G |
N/A |
|
|
79-93 |
|
|
|
|
880036
|
30 |
Blue |
561035 |
3.140"x.305"x.950"
Style G |
N/A |
|
|
79-93 |
|
|
|
|
880037
|
31 |
White |
403417 |
3.140"x.305"x.960"
Style G |
N/A |
|
|
79-93 |
|
|
|
|
880007
|
34 |
Green |
9774413 |
3.35"x.305"x1.500"
Style H |
880042 1 |
|
76-85 |
|
69-84 |
76-79 |
77-84 |
82-93 |
880008
|
35 |
Orange |
9780387 |
3.35"x.305"x1.500"
Style H |
880042 1 |
|
76-85 |
|
76-83 |
76 |
74-79 |
82-93 |
880009
|
36 |
Natural |
1359270 |
3.35"x.305"x1.500"
Style H |
880042 1 |
|
76-84 |
|
69-83 |
71-78 |
69-79 |
82-93 |
880010
|
37 |
Red |
1359271 |
3.35"x.305"x1.500"
Style H |
880042 1 |
|
76-84 |
|
69-84 |
66-78 |
64-79 |
82-93 |
880011
|
38 |
Blue |
1359272 |
3.35"x.305"x1.500"
Style H |
880042 1 |
|
76-84 |
|
69-84 |
66-77 |
65-89 |
82-93 |
880012
|
39 |
Brown |
1359273 |
3.35"x.305"x1.500"
Style H |
880042 1 |
|
76-84 |
|
71-83 |
76 |
69-79 |
82-93 |
880028
|
40 |
Black |
1362048
25513047 |
3.35"x.325"x1.670"
Style H |
880043 1 |
|
76-84 |
|
69-83 |
76-78 |
69-79 |
82-93 |
880029
|
41 |
Yellow |
1362195 |
3.35"x.325"x1.670"
Style H |
880043
1 |
|
76-84 |
|
69-83 |
76-78 |
69-79 |
82-93 |
880030
|
42 |
Green |
1362049
25513049 |
3.35"x.325"x1.670"
Style H |
880043
1 |
|
76-84 |
|
69-83 |
76-78 |
69-79 |
82-93 |
880031
|
43 |
Purple |
1362196
25513050 |
3.35"x.325"x1.675"
Style H |
880043
1 |
|
76-84 |
|
69-83 |
76-78 |
69-79 |
82-93 |
| N/A |
44 |
Grey |
9780470 |
3.35"x.325"x1.670"
Style H |
880043
1 |
|
76-84 |
|
69-83 |
76-78 |
69-79 |
82-93 |
880032
|
45 |
Lt.
Blue |
9775187 |
3.35"x.325"x1.690"
Style H |
880043
1 |
|
76-84 |
|
69-83 |
76-78 |
69-79 |
82-93 |
|
1 Housing fits
TH400 transmissions. See below.
GM Driven Gear Housings
|
Style I
|
Style J |
|
| TCI Housing Part # |
Tooth Count |
Color |
Ref.OEM # |
Notes |
Applications |
880021
|
18-23 |
Steel |
345215
25513247 |
7/8"
Ø
Style I |
Powerglide,
TH350 Chevy |
|
N/A |
34-39 |
Black |
6261629
1247266 |
2.1"
Ø
Style J |
700R4,
TH250, TH350 BOP |
|
N/A |
40-45 |
Black |
1362294 |
2.1"
Ø
Style J |
700R4,
TH250, TH350 BOP |
880042
|
34-39 |
Alum. |
|
1.935"
Ø
Style J |
TH400 |
880043
|
40-45 |
Alum. |
|
1.935"
Ø
Style J |
TH400 |
|
GM Drive Gear
Clips
|
880024
|
880026 |
|
| TCI Housing Part # |
Ref.OEM # |
Notes |
Applications |
880024
|
6261781 |
5/16"
wide |
See
GM Drive Gear Chart |
880026
|
8628557 |
7/16"
wide |
See
GM Drive Gear Chart |
|
Ford Speedometer Gears
Note:
Ford drive gears are machined into the output shaft. You may need to
remove your tailhousing to determine how many drive teeth your
transmission has. The following chart is for reference.
Ford Drive Gears
| Variations |
| C4/C5 |
C6 |
AOD |
| 7
teeth |
6
teeth |
7
teeth |
| 8
teeth |
7
teeth |
8
teeth |
| 9
teeth |
8
teeth |
9
teeth |
| |
9
teeth |
|
|
Ford Driven Gears
| TCI Driven Gear Part # |
Tooth Count |
Color |
Ref.
OEM # |
Notes |
Clip
Used |
Applications |
| C4/C5 |
C6 |
AOD |
881000
|
16 |
Tan |
|
|
881005
|
ü |
ü |
ü |
881001
|
19 |
Tan |
C7VY-17271-A |
|
881005
|
ü |
ü |
ü |
881002
|
20 |
Orange |
C8SZ-17271-B |
|
881005
|
ü |
ü |
ü |
881003
|
21 |
Red |
|
|
881005
|
ü |
ü |
ü |
8810041
|
23 |
White |
J316-7393 |
|
881005
|
ü |
ü |
ü |
|
|
