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-   -   gear selection/suggestion (https://forums.off-road.com/ford-67-96-f-series-78-96-bronco/194631-gear-selection-suggestion.html)

bronco_fng 06-14-2004 10:23 PM

gear selection/suggestion
 
I have just completed SAS. Went from stock w/4.10 gears and 36 TSLs to one tons w/4.56 and 39.5 TSLs. I'm running a C-6 with an NP 208 According to gear ratio calculators these combinations are almost identical. Previously in 4x low (2.62) I felt like I could jump off the ground. Now the seat of my pants tells me that I'm undergeared. How much of a different feel am I going to get with the bigger set up? Am I just feeling the added weight of the heavier gears, axle shafts, 39.5s etc?

Although this is not my daily driver I still may drive up to a couple of hundred miles on the highway to reach offroad destinations. Considering no od in my 3 speed tranny am I at the top of my range? I'm turning about 2600 at 60 now. Is 4.88 or 5.13 something to be considered?


BigNorm 06-16-2004 02:26 AM

Re: gear selection/suggestion
 
I'd say 4.88s for the street or 5.13s for dirt. Are you running a D60 or 44? I'm hoping its a D60 with 39s.

TheJuice 06-16-2004 01:36 PM

Re: gear selection/suggestion
 
Considering your current RPM's at 60, I'd say if you want to maintain any kind of highway speed you need to stay where you're at now. I would not pay to go from 4.56 to 4.88. I think your only real option is 5.13's, and that means either highway at 55mph turning high RPM's, or a tranny swap as well.

Hey BigNorm, hope all is well with ya!
He did post "one tons" on the axle swap, so I would assume D60 or better in front.

bronco_fng 06-16-2004 04:05 PM

Re: gear selection/suggestion
 
Norm I am running a 60

Juice the guy at the driveline shop also said that going from 4.56 to 4.88 would be a waste. It looks like 5.13 and 50-55 mph on the highway is the choice.


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