| [GMCnet] 3:21 FD can not perform like a limited slip [message #304948] |
Fri, 05 August 2016 11:05 |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
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The 3:21 final drive has a planetary gear set, instead of a spider gear set. Both types of gear sets are used to allow one tire to turn faster, or slower as you make turns. Most types of limited slip have clutch packs that offer a source of friction. This friction induces resistance between both drive axles to rotate at the same speed. The 3:21 planetary gear set offers absolutely no type of friction applying attributes. Or axle locking method. When both drive tires have the same coefficient of friction applied to the ground surface. Both tires will pull at the same torque rate. At that point. The ground surface acts as your limited slip source of friction. There have been many owners speak of the 3:21 FD acting as a limited slip. They just happened to have the right weight/adhesion to a surface at that time. That's it in a nutshell.
Bob Dunahugh
78 Royale.
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