1964-1966 GM NPG NP435 Transmissions

Shop now for Parts and Manuals specific to 1964-1966 Chevy and GMC trucks equipped with New Process NP435 4 Speed Manual Transmissions. Most items in stock for quick shipping.

An avaialble heavy-duty 4 speed manual transmission used in 1964-1966 GM full size 1/2 ton to 1 ton trucks was the wide-ratio (6.69:1) New Process NP435 which is only synchronized for 2nd, 3rd, and 4th gears. The NP435 has a direct drive 1:1 4th gear.

We stock bearings, seals, and some hard parts for both these transmissions. 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.