4:10 or 3:73 ?
Possible upgrading to Ram dually. I'm pulling 12,500# gvw with SRW and 3.42 rear end. Usually lock 6th gear out. Plan is to move up to new 15,000# gvw 5th. Not sure if I want to get 4.10 or 3:73. Wh...
Forum Discussion
SidecarFlip wrote:
Final drive ratio's are dependent on intermediate ratio's. You need to ascertain what the gear ratio's of the transmission are before selecting the final drive ratio.
Keep in mind however, that a 4.10 -1 rear is turning faster (more revolutions per mile) than a 3.73 -1 rear is. More revolutions equal greater internal heat (there is heat produced friction back there) and all the moving components, bearings, seals and gears are wearing faster. The intermediate (transmission) retio's will be the most important factor however.
So on the flipside, no pun intended, with the 4.10s more revolutions equal easier pulling, less strain on equipment!
