THIS SECTION IS COMPILED FROM THE ADVANCE ADAPTERS CATALOG. THE PAPER CATALOG IS ALSO AVAILABLE AT TLC TOYOTA LAND CRUISER ROCK CRAWLING OPTIONS FJ40 CRUISER CRAWLER ROCK BOX: For the past few years we have had requests for a low-geared transfer case, low gear set, or a reduction box to fit the FJ40 Toyota Land Cruisers. The Atlas was a consideration; however, designing it with the proper configuration to fit the Land Cruiser proved too cost prohibitive. A new set of low gears required to many modifications to the case. We did a reduction box, but due to its length, it worked best on FJ55s and FJ40s that had a stretched wheel base. We are currently in the prototype stage of our new "Cruiser Crawler Rock Box". The internal design of the unit allows us to keep the length down to 5². The unit is configured with two housings: a plate, which will bolt to the transmission; and the housing, which houses the 3.44:1 reduction gears. Our application plans include the stock 3 & 4 speed transmission, plus any transmission that we offer a transfer case adapter for. In addition, since some of our adapter are fairly long to allow for front driveshaft clearances, we will be making some of the more popular adapters shorter to allow for this 5² reduction box. Pricing and availability on this new unit should be available December 2001. FJ40 & FJ55 NP203 REDUCTION BOX: These kits offer a 2:1 reduction for your Land Cruiser. They are designed to be used with the stock Land Cruiser 3 & 4 speed transfer cases. These kits are designed to use the front half of the GM NP203 transfer case, which houses the low gear set. These kits only work with a TH350, 700R-4, TH400 or SM465. Transfer case linkage, crossmember, and floorboard modifications are necessary. Due to the added length, driveshaft modifications will be necessary. Moving the engine forward may compensate for some of the added length; and by removing your mechanical fan and going with an electric pusher fan, you may be able to save up to 4" of your driveline. P/N 50-8801 - Toyota Land Cruiser 3 speed transfer case to NP203 reduction box P/N 50-8802 - Toyota Land Cruiser 4 speed transfer case to NP203 reduction box FJ60 TRANSFER CASE LOW GEARS: Mark's 4WD offers new gear sets for the FJ60 transfer cases August 1980 to January 1990. This gear set has an 8% overdrive and a 2.81:1 low range; and/or the gear set has an 8% underdrive and 3.05:1 low range. Part No. 716920 and 716920UD fit FJ60s with the 34mm cluster pin transfer case gear sets (Aug. 1980 to Oct. 1985). Part No. 716921 and 716921UD fit FJ60s with the 38mm cluster pin transfer case gear sets (Oct. 1985 to Jan. 1990). The overdrive gear sets are ideal for the FJ60 models since they improve fuel economy; and the underdrive gear sets are ideal those vehicles running 35" & upward size tires and requiring more engine RPMs. The best addition is the low gear reduction for off-roading. The installation of this gear set does require a small amount of internal case modifications; however, it does not require any floorboard, driveshaft, or crossmember modifications. FJ60 GEAR REDUCTION BOX: If you're looking for a even lower gear ratio, there is yet another option. We have worked closely with one our Land Cruiser distributors to developed a NP203 crawl box for the FJ60s. This crawl box can be mounted to either the stock 4 or 5 speed transmission and/or the GM TH350, TH400, 700R & SM465 transmissions. This product is manufactured by Advance Adapters exclusively for Colorado Offroad Xpress. For information on this reduction box or to purchase of these units, please contact Jerry Nichols at (719) 576-0616. MARKS 4WD ADAPTORS Advance Adapters is proud to be the exclusive U.S. distributor for Mark's 4WD Adaptors of Melbourne, Australia. Mark¹s 4WD has been manufacturing adapters since 1979. There product line coverage overlaps ours on some vehicles like the Toyota pickup and the Toyota Land Cruisers; however, they offer some adapters for these vehicles that we do not. A large part of their product line ventures into vehicles that are popular over there, but are in limited supply here in the United States. The drivetrain on Australian vehicles are configured for the driver location on the right side of the vehicle, whereas the U.S. is on the left side. Caution should be used in this area only when dealing with motor mounts. Some mounts may offset the engine to obtain steering clearance for their vehicles, but it will cause clearance problems on ours. Other than the engine position, all other components seem to be interchangeable. Many of their bellhousing adapters are configured to fit the common Chevy and Ford blocks that are readily available; however, you will see some adapters for engines that we do not see here in the U.S. Marks 4WD offers adapters for: Toyota Land Cruisers Toyota pickups Land Rovers Range Rovers Nissans Mitsubishi trucks Isuzus Plus many accessories Marks 4WD offers adapters for: Toyota Land Cruisers Toyota pickups Land Rovers Range Rovers Nissans Mitsubishi trucks Isuzus Plus many accessories Their product line is continually growing. Information on their product can be obtained through us, or you can check their complete catalog on-line at: www.ozemail.com.au/~marks4wd. CLICK BELOW FOR MORE INFORMATION: < < Back to Advance Adapters Table of Contents OVERVIEW / GENERAL INFORMATION ENGINE INFORMATION GM TRANSMISSIONS FORD TRANSMISSIONS TLC BELLHOUSING ADAPTERS TLC T/C ADAPTER CHART