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...
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RCMAN46 wrote:
Never understood why we have to tow in 6th gear or the top gear.
That is the whole purpose of a transmission. I agree the 3.42 is the ideal rear gear for the Cummins with the Aisin.
Unloaded as said you can cruise at a comfortable and fuel saving rpm even at 80-90 mph which I often see out here in the west with speed limits at 80 mph.
Never said I have to tow in high gear. What I was trying to say is not everyone needs the gearing for high speed unloaded use. Gear for the speed you drive. The amount of non towing miles that I drive my truck is very low, and most of that is below 60. And I get that seat of the pants the 3:42 in 5th is equal to the 4:10 in 6th. Either would be a big jump from the 305 hp 5 speed truck I now have. I would rather have the extra gearing down low, even though I know it's not really needed.
