4.56 Gears?

Bump Any master Kits out yet?

You might ask SDHQ, I know there was bearing issues and compatiblity issues with 2012 torsen.

-Greg

Bump for updates!

Can someone explain diff between 4.88 and 4.56 gear sets in terms of bottom end and upper end Speeds?

I'm more into bottom end , but I don't want to end up with max speed of 75mph lol

I need gears bad. I wish there was a kit out for the 2011+ already.

---------- Post added at 01:37 PM ---------- Previous post was at 01:36 PM ----------

Omani-Raptor said:

Can someone explain diff between 4.88 and 4.56 gear sets in terms of bottom end and upper end Speeds?

I'm more into bottom end , but I don't want to end up with max speed of 75mph lol

Click to expand...

RICHMOND Street Performance Calculator

Omani-Raptor said:

Can someone explain diff between 4.88 and 4.56 gear sets in terms of bottom end and upper end Speeds?

I'm more into bottom end , but I don't want to end up with max speed of 75mph lol

Click to expand...

Well that's a big can of worms most do not understand.
Bigger tires = faster top end speed less low end torque
All has to do with tire diameter, gear ratio, rpm
If you go to 37" tires with 4.10 gears major power loss
37" tires with 4.88 gears will put you back in power band of engine

With the horsepower and torque generated by the Raptor, I am stunned that there is a need for lower gearing with a 2" change in tire size. I ran my Jeep with 33's and 3.21's for a year before moving to 35's and 4.88's. That was with a minivan motor (v6).

torrin said:

With the horsepower and torque generated by the Raptor, I am stunned that there is a need for lower gearing with a 2" change in tire size. I ran my Jeep with 33's and 3.21's for a year before moving to 35's and 4.88's. That was with a minivan motor (v6).

Click to expand...

Yeah I can't see there being a huge loss at all either with just bumping up to a 37 from a 35.

Omani-Raptor said:

Can someone explain diff between 4.88 and 4.56 gear sets in terms of bottom end and upper end Speeds?

I'm more into bottom end , but I don't want to end up with max speed of 75mph lol

Click to expand...

I am running 4.88's with 37" tires. I lost 4mph top end. In other words, my truck tops out at 122mph now. The 4.88's made off road mode obsolete. It is nothing but pure win in my book.

Great many thanks guys