Sure, a doubler behind the 465 is more than enough gearing for even the weakest mill. What I was trying to say is with the at idle torque the 6.2 puts out, combined with it being mechanically governed at idle ~58:1 CR works quite well.
I ran that combo at BB '03 and was absolutely tickled with how well it performed. I did the first half of Pritchett Canyon with my feet flat on the floor...point and steer. That combo made wheeling elegantly incredibly easy. It never stalled once, in fact I am pretty sure it would smoke the clutch at idle before stalling. As it's climbing and the gravity or an obstacle is trying to pull the idle speed under 500 rpm the IP adds fuel itself. Gotta remember even though it's not a Cummins, the 6.2 still makes a ton more tq at idle than a really healthy gasser. It really doesn't need 100:1 to get it done.
Rene