Liberty VS Jerico
 

Does anybody have any hard numbers on which one of the 5 speeds has the lease amount of frictional loss? I know both are used in Pro Stock, and I have heard of some teams switching to the new Jerico because of less friction.

The G-Force tranny has the least. All gears can be R.E.M.'d for the lowest inertia of them all. if ya got the bucks you can get them with ceramic bearings for even less drag .