This transmission is called an RTS. The RTS transmission is an alternative replacement as a heavy duty transmission with overdrive for D-18 and D-20 transfer cases. It can be used in conjunction with a (WARN) style OD as well. When used this way, the RTS gives a 43% increase in speed and a 43% reduction in RPM.
It is a heavy duty transmission originally installed in Ford pickups and Ford Broncos. It has an aluminum case with an aluminum shift tower with a cane shifter.
The RTS has large heavy duty bearings, is completely rebuilt and comes with an adapter for a D-18 or a D-20 transfer case.
This transmission is a good replacement for the T-14 transmission behind a V-6. This application requires a special adapter and pilot bushing to bolt to the GM bellhousing which is available separately ($222)
The RTS is also a direct replacement for the T-150 transmission (’76-’80 CJ’s) that bolts direct to the 258 6 cylinder(4 liter) and 304 V-8 with the D-20 transfer case.
The RTS is also adaptable the the ’72-’75 258 6 cylinder and 304 V-8 with the changing of the bellhousing with the D-20 transfer case.
1st Gear 3.25 to 1 2nd Gear 1.92 to 1 3rd Gear 1.00 to 1 4th Gear 0.78 to 1 Reverse 3.25 to 1
The history of the RTS Overdrive Transmission we use.