Speedometer Gears
| Tech Stuff:
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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 |
|
|
|
|
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 |
|
880003
|
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 |
|
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 |
880013
|
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 |
|
1
This is a retrofit gear to allow the speedometer to function with 3.73
and 4.10 rear end gears. Since the gear tooth pitch is slightly
different than OE, the service life of this gear is limited to less than
25,000 miles.
Ford Driven Gear
Clips
881005
|
| TCI Housing Part # |
Ref.OEM # |
Notes |
Applications |
881005
|
C1DZ-17292-A |
5/8"
C-clip |
See
Ford Driven Gear Chart |
|
Chrysler Speedometer Gears
Notes:
 |
Chrysler drive gears are machined into the output
shaft and have 13 teeth.
|
These driven gears fit all
3-speed & overdrive Torqueflites.
|
All Torqueflite transmissions use a
1.75" diameter driven gear housing.
|
|
The driven gear housings go in the
tailhousing assembly on all two-wheel drive applications.
|
The housing must be placed in the correct
orientation for the particular driven gear being used. The three positions
broken down by tooth count are; 25-31, 32-38, 39-45 |
| | |
Chrysler Driven Gears
| TCI Driven Gear Part # |
Tooth Count |
Color |
Gear
Diameter |
Typical
Axle Ratios |
Housing
Position Used |
| N/A |
25 |
Lt.
Green |
0.940"
Ø, Style A |
3.07 |
25-31 |
882000
|
26 |
Red |
1.175"
Ø, Style A |
3.07 |
25-31 |
882002
|
27 |
Beige |
1.175"
Ø, Style A |
3.07 |
25-31 |
882003
|
28 |
Lt.
Blue |
1.175"
Ø, Style A |
3.07 |
25-31 |
882004
|
29 |
Black |
1.175"
Ø, Style A |
3.21,
3.23, 3.54, 3.55 |
25-31 |
882005
|
30 |
Yellow |
1.175"
Ø, Style A |
3.21,
3.23, 3.54, 3.55 |
25-31 |
882006
|
31 |
Green |
1.175"
Ø, Style A |
3.21,
3.23, 3.54, 3.55 |
25-31 |
882007
|
33 |
Yellow |
1.425"
Ø, Style B |
3.54,
3.55, 3.90 |
32-38 |
882008
|
34 |
Green |
1.425"
Ø, Style B |
3.54,
3.55, 3.90, 4.10 |
32-38 |
| N/A |
35 |
Orange |
1.425"
Ø, Style B |
3.21,
3.23, 3.34, 3.55, 3.90, 4.56 |
32-38 |
| N/A |
36 |
Red |
1.425"
Ø, Style B |
3.54,
3.55, 3.90, 4.10, 4.56 |
32-38 |
| N/A |
39 |
Green |
1.700"
Ø, Style C |
3.90,
4.10 |
39-45 |
| N/A |
40 |
Orange |
1.700"
Ø, Style C |
4.56 |
39-45 |
| N/A |
41 |
Red |
1.700"
Ø, Style C |
3.90,
4.56 |
39-45 |
| N/A |
45 |
Yellow |
1.700"
Ø, Style C |
4.56 |
39-45 |
|
|
