TRANSMISSION UPGRADES: GEAR SPEEDS AND GRAPHS
All figures and graphs based on shifting at 2300 rpm
 
With 9.00x20 tires (radius 19.25-inches)
Overall Ratio Gear RPM After Shift MPH @ 2300 RPM MPH @ 2500 RPM
18.68 2nd 800 14.11 15.34
10.886 3rd 1340 24.20 26.31
6.72 4th 1419 39.20 42.63
5.31 5th (.79 OD) 1816 49.6 53.95
4.637 5th (.69 OD) 1586 56.84 61.77

 
With 14.50R20 tires (radius 21-inches)
Overall Ratio Gear RPM After Shift MPH @ 2300 RPM MPH @ 2500 RPM
18.68 2nd 800 15.39 16.72
10.886 3rd 1340 26.41 28.70
6.72 4th 1420 42.78 46.50
5.31 5th (.79 OD) 1817 54.15 58.85
4.637 5th (.69 OD) 1587 62.00 67.39

Drop in RPM from 2nd to 3rd = 960

Drop in RPM from 3rd to 4th = 881

Drop in RPM from 4th to 5th = 484 (with stock 5th gear)

Drop in RPM from 4th to 5th = 714 (with WS .69 OD Upgrade Kit)


 
When used in high range only:
 

 
When used with low range as gear splitter. As you can see the ratios widen as the gear goes up, an almost ideal situation. Provides excellent power with heavy loads:
 

This page last updated on 05-14-2012
Tom Bauer (410) 549-6649 waterloospecialties@hughes.net