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The NV271 and NV273 family of transfer cases were designed and developed by New Venture Gear (NVG) for the new 1999 Ford light duty trucks with requirements to withstand severe duty off-road use. Heavy payloads accompanied by gross vehicle weights of 7938 kilograms (17,500 lbs.) are now possible. The new family of mechanical shift and electric shift transfer cases is designed to be durable under varied terrain, climates and engine displacements ranging from 5.4 to 7.3 liters. An emphasis has been placed upon high strength and long-term durability without exceeding the customer weight target of 54 kilograms (119 lbs.).

The 233 Electric Shift Part-time Transfer Case was developed by New Venture Gear (NVG) to provide drivers with push-button control for all shift positions. Coupled with electronic controls and vehicle interlocks, the system had to meet cost goals. This state-of-the-art transfer case and electronic control module, which was launched in the 1992 GM S-10 Blazer, improves vehicle passenger compartment space, reduces noise, eliminates shift effort, and prevents inadvertent shift conditions as a result of the substantial hardware and software controls incorporated in this shift system. Two-speed, shift-on-the-fly features were carried over from the manual shift 231 case.