2021 5.0 switching to 4.56 gears

[Badlander_GA5.0]

I have a 2021 5.0. Its on 35's and has 3.31 gears. I am getting 4.56 gears put in next week. Can anyone advise me what all needs to be adjusted on the pcm tcm bcm etc... and what the best and easiest way to make those adjustments will be?

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[Graygoose2021]

Do a lot of off-roading, that's a pretty good jump. I had same ratio you have stock on my Ram, with 8 speed on 35's and it did fine.

 

[Porpoise Hork]

Fairly certain the gear ratios can be updated with Forscan along with the tire diameter (if that was never updated) to make sure everything is correct after the gear swap.

 

[ThumperF150]

Mine had 3.73s. When I went to 35S I changed the gears to 4.11s as they kept my cruising RPMS within about 100-200 of factory at 60 mph. I then used a Hypertech speedometer module to correct the speedometer.

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