High Impact - Dual Transfer Cases



Transmission & Gear Page High Impact Home Transmission & Gear Page Guide to 4WD Gearing Customer Free Tech Line Complete Conversion Kits Beadlock Wheels Klune-V Extreme Underdrive NV4500 5spd NV3550 5spd Other Stick Transmissions Automatic Transmission Transfer Cases Dual Transfer Cases / Klune-V Overdrive Conversions Overdrives & Underdrives Contact High Impact Apps by Vehicle Type Phone Toll Free 888-898-4331	As the term "Dual Transfer Case" suggests, a second transfer case, or at least the gear reduction portion, are adapted into the drivetrain after the transmission and before the main transfer case. Doing this allows additional gear reduction: The added gear box allows the driver to further multiply the amount of gear reduction available. "Doubler" NP203 Reduction based systems The "Doubler" consists of the gear reduction portion of an NP203 Tcase coupled to the main transfer case. In the example shown the Doubler is mounted to an NP205 transfer case, allowing possible effective transfer case ratios of approximately 1:1, 2:1 and 4:1 "Marlin Crawler" Toyota reduction based systems 2.28:1, 4.0:1 and 4.7:1 reduction units available to mate up to Toyota minitruck, 4Runner, Tacoma and Toyota LandCruiser Transfer Cases Klune-V Extreme Underdrive systems While not precisely a "Dual Transfer case", it belongs on thios page. The Klune-V Extreme Underdrive was developed as the logical next step beyond the dual transfer case, and is the current ultimate multiple gearbox add-in. Full discussion of the applications, pros and cons of such systems in the article "A Systems Approach to 4WD Gearing"