1965-1966 Ford F100 & F250 NPG NP435 Transmissions

Shop now for Parts and Manuals to fit 1965 Ford F100 and 1965-1966 Ford F250 trucks with New Process NP435 4 Speed Manual Transmissions.

The primary heavy-duty 4 speed manual transmission used in 1965-1966 Ford full size 1/2 ton to 3/4 ton trucks was the wide-ratio (6.69:1) New Process NP435 which is only synchronized for 2nd, 3rd, and 4th gears. The NP435's have a direct drive 1:1 4th gear.

For synchros, shafts and gearing, the availability of most parts for the NP435 is getting tighter every day, but we can usually supply most parts you might need.

The NP435 was replaced after the 1992 model year by the 5 speed New Venture NV4500 transmission with overdrive.