gears

[martin8]

i have a 05 ford excursion if i put 4.56 gears will i have a replace the stock locker?

[jetjock15]

i replied to your repetitive post in the general forum... there is no stock locker, you will not have to replace your stock limited slip or open diff, the gear is bolted to the outisde of the carrier, however it might be a good idea to upgrade if your paying to get it done.

[martin8]

what is your rpm at when u are going 65 ?

[jetjock15]

i dont know search gear ration chart on google and you will find lots of charts that show you what rpms you be at per gear ratio and tire size

[cartmanea]

The stock LS is junk, but there is no carrier split on the 10.5, so you don't have to worry about changing carriers with gears. I wouldn't keep the stock LS though, upgrade to a TruTrac while you're in there. What size tires are you running?

[martin8]

37x1350x22

[cartmanea]

With 37s, I would go with 4.30s unless you plan to get bigger tires. 4.56s are better for 38.5+.

[martin8]

i pull a 22feet boat around

[cartmanea]

Ok, well 4.30s will put you back to the same ratio as 3.73s with stock tires. If you like to run over 70mph much, going lower will hurt your mileage.

[RescueF250]

4.30's will do you just fine.