Are you on stock 31" tires? There's not a huge jump from 3.73:1 to 4.10:1. If you're on 33" ATs or something big/heavy like that I'd go to a 4.56:1. The OD ratio in that 60E is a 30% (0.70so it'll be just shy of 2300rpm @ 70mph.
That'd really up the towing capacity without having to swap motors or add a blower.






so it'll be just shy of 2300rpm @ 70mph.
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