Dual cases

[88yota]

I have heard a lot of guys talk about dual cases, i understand that they lower the gear ratio but thats about it. School me on them please

 

[lbyota85]

It allows you to use the reduction box from a gear driven Toyota transfer case as an additional underdrive unit between the stock transmission and transfer case. A stock transfer case has a 2.28:1 low range gear ratio. With a dual transfer case adapter, the two stock gear ratios multiply to give you 5.2:1 with both cases in low. Lower ratios are available by stacking more transfer cases or by adding low range gear sets to one or more of the cases. D-shaft and X-member mods as well as an extra shifter hole in the floor will be necessary

 

[88yota]

can i regear my stock t-case? and just have one?

 

[Andy J.]

Yep, 4.7 to 1 is a common gear set.