How is the project coming along?
Forgot about this thread lol. It's done now, I didn't have to do any custom work it bolted right up. While I had the axle off I decided to extend the brake lines, diff vent line, and abs cable. Already being on 8 inches of lift with plans of going bigger in the near future, I could play my brake lines like a guitar at full droop.
Everything else was pretty simple, did a tcase and transmission service, all is well. Actually found a frozen caliper slide pin while checking the brakes which explains the occasional right pull I had.
IMO 4.10s are spot on for a gen 4 5.3 on 37x13.5s, definitely a bit more pep, a lot less struggle on hills. I actually found a net gain in MPG (supposedly). I used to get about 16 cruising at 35-45 in town, and 13 on the highway, now I'm getting about 19 and 16.
Don't know if the mpg calculation is thrown off due to gearing, but I'll have to check
With 3.08s and 37s, my speedo read 5mph low at city speeds, and 8-10mph low at "70". With 4.10s and 37s my speedo reads about 10mph high at any speed, slightly more accurate at low speeds and slightly less accurate at high speeds. Highway cruising isn't as loud as I thought it would be. Overall the gears feel better than the full stock setup, I personally like the shorter range
