Speedo Gear Chart

by GhostMachine

[adsense]

 

Gear Ratio Calculator

# of Drive Teeth: Axle Ratio:
Tire Diameter:
# of Driven Teeth:

 

Drive gears

All GM

# of teeth Gear color GM part # Shaft size Clip size
8 Black 6261783 1.19″ 5/16
10 Purple 6261785 1.19″ 5/16
18 Green 6260037 1.19″ 7/16
19 Natural 8640188 1.19″ 7/16
15 Grey 8642620 1.19″ 5/16
17 Red 8640517 1.19″ 5/16

 

Small driven gears

Power glide, 200 Metric, TH250, TH350 and TH400

# of teeth Gear color GM part #
18 Brown 3987918
19 Natural 3987919
20 Blue 3987920
21 Red 3987921
22 Grey 3987922
23 Black 3980346

 

Small driven gears

200R-4 and 125 Metric

# of teeth Gear color GM part #
26 Brown 25502669
27 Black 410731
28 Yellow 416765
29 Green 403999
30 Blue 561035
31 White 403417

 

Large driven gears

200 Metric, TH250, TH350, TH400 and 700R-4

# of teeth Gear color GM part #
34 Green 9774413
35 Orange 9780387
36 Natural 1359270
37 Red 1359271
38 Blue 1359272
39 Brown 1359273
40 Black 1362048
25513047
41 Yellow 1362195
42 Green 1362049
25513049
43 Purple 1362196
25513050
44 Grey 9780470
45 Lt. Blue 9775187

 

Speedo gear chart for the 700R/4L60/4L60E

 

15-Tooth Drive Gear

Gear Ratio Tire Size Driven Gear
4.56 33 42
4.56 35 39
4.10 26 45
4.10 27 45
4.10 28 44
4.10 29 43
4.10 30 41
4.10 31 40
4.10 33 38
4.10 35 35
3.73 26 43
3.73 27 42
3.73 27 1/2 41
3.73 28 40
3.73 29 39
3.73 30 38
3.73 31 36

 

17-Tooth Drive Gear

Gear Ratio Tire Size Driven Gear
3.73 28 45
3.73 29 44
3.42 26 45
3.42 26 1/2 44
3.42 27 43
3.42 28 42

 

18-Tooth Drive Gear

Gear Ratio Tire Size Driven Gear
3.23 26 45
3.23 26 1/2 44
3.23 27 43
3.23 28 42

[adsense]

Chevy Mania!

Facebook Activity

Sponsors

Chevymania! Sponsors Chevymania! Sponsors Chevymania! Sponsors Chevymania! Sponsors Chevymania! Sponsors

Copyright © 2017 Chevymania!