From 355 to 410 on manual trans 4x4?

Gear set kit?
Dial indicator?
Gearbox fluid?
Does transfercase and tranny gears have to be changed also?

What stuff so I all need to buy first?

 

First of all why do you want such a low gear in the first place? Power or tire size ect?
What size tires are you planning to go to?

I got 4.11 on my axles with right now 33's. I don't like the freeway RPM's way to high. With 3.9 gears the RPM's were perfect. For me I did 4.11 to step up to 35's when these 33's wear out, they still are new.

But to answer your question your forgetting the master bearing kit, you don't 100% need it but it is best to do it. If you don't get it you will need a new pinion bearing and a new crush sleeve. www.ringpinion.com is a great place to buy your gear sets and the bearing kits ect complete.

One last suggestion, get a locker since your in there.

 

You will need to change the speedometer drive gear (if these are mechanically driven) to allow the speedo to give accurate speed. Thats the only gear in the trans that has to be changed, and the transfer case can be left alone. If its anything like a gm, its a fairly easy swap to change speedo gears.

 

when i did my trans swap i swapped the gear on the speedo cable it popped out real easily...

 

Yea just not sure which speedo gear to change to, I'm off by 5mph right now with 30in tires

 

For which gear to use bust out the math skills. Get a GPS most smart phones can do it. Find out how far you off at each 10MPH increments. Get an average of the total in a percentage. Now pull your stock gear and find out how many teeth there are. Then add in that percentage to the number of teeth. New gears can be found at your local dealership. Some are super cheep some are $100.