Gears

[crazy longhorn]

Originally Posted by truckminded

I am real happy with the way it is now. I dont want to loose power out of the gate.I think I'll wait and find sombody to show me how to put the eaton in my carrier & use my gears.MY truck is 72 1/2 ton gmc 5 lug, the other rear end is 72 1/2 ton chevy 5 lug. Theese should trade right I dont know why but the chevy looks smaller.mabey I am seeing things again.

You cant swap the gears from 3.07 to 3.73 without a carrier swap, the 3.07 is a 3 series carrier (gears 2.76-3.42), & the 3.73 is on a 4 series carrier (3.73-4.56). You can get AFTERMARKET 3.73 gears that will fit the 3 series posi that you have tho. IMO, a 3.42 gear would give the best of both worlds, less rpm on the hyway, but also good takeoff. Best of luck, L