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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cdlaine wrote:
Not nearly as scientific about it as many of these posts...
Year 14 on my 8.1L with 4.10 rear end and Allison. Pull an
Artic Fox 295T. Still very pleased with performance, towing,
dependability. Have accepted MPG as "is what it is" . Cannot
think of an instance where I regretted getting the 4.10.
Reassuring to know I have it if needed.
Charles
If we use the 8.1 gas as the standard with a 4.1 gear as ideal then the Ram 6.7 diesel would work best with a 2.73 gear.
8.1 max hp is at 4200 rpm the 6.7 is at 2800 rpm.
4200/2800=1.5 thus 4.1/1.5=2.73
