AMW 425 and axle gearing

[RidinDirty]

Just wanted an opinion about what gearing you guys are running. Currently I have had 5.13 in stock axles and running 37s for a long time now. Just wondering if I should continue to run this or consider going to a lower ratio. Any issues running at 5.13? This is for an upcoming build. TIA.

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[JTPatriot]

Those gears are going to be to low, RPM's will be to high at cruising. I have 4.88's running 38" tires in mine and sometimes wish I had 4.56's. Here is a break down of my speeds, shift points and RPM's.

1-2: 1670 RPM's 12 mph
2-3: 1479 15
3-4: 1430 19
4-5: 1440 25
5-6: 1356 30
6-7: 1502 39
7-8: 1318 44

60 MPH - 1834 RPM's
70 - 2130
80 - 2430

Oh, by the way. I have the 5.7 with the 6.4 intake which makes it the 425 package AMW is offering now.