New Process 435 Transmission
The 435 is an excellent, heavy-duty truck transmission designed and used in ½, 3/4 and 1+ ton trucks. It is a well-built transmission and remains easy to locate and generally inexpensive to buy and maintain. The strength, relatively short size and the gearing of the transmission make it a good choice for a variety of situations.
The NP435 was made by New Process Gear from 1964 to 1993. They are found primarily in Ford trucks from 1966 to 1992 and Dodge trucks from 1964 to 1993. They also had limited distribution in GM & Chevrolet trucks from 1968-1972.
Identification
This transmission is 10.8" long and features an aluminum top cover that is retained by eight bolts. The NP435 case is of cast iron.
The Ford NP435 has a 1-1/16" diameter, ten spline input shaft that has a stick-out of 6-1/2" from the front face of the transmission. The pilot tip of the transmission measures .668". The front bearing retainer flange measures 4.850" and the bearing retainer tube is 1.430" in diameter. The front bolt pattern is the symmetrical Ford "butterfly" pattern; roughly 8-1/2" wide by 6-5/16" tall. The input shaft stick-out length is 6-1/2".
The Dodge NP435 has a 23 spline input shaft with an 8-3/8" stickout.
The shifting pattern for the 435 is in the standard "H" pattern with reverse gear being to the right side, and down.
Features
The NP435 is a top loaded, top shifting truck style transmission. The NP435 enjoys a very low compound gear at
6.68:1 and as such it is a popular choice for those wanting a very low crawling gear. Note that some Dodge versions of this transmission offered a taller first gear of 4.56-to-1.
The NP435 features a power-take-off (PTO) port on the passenger side of the case.
Transfer Case Adaptability
This transmission makes an excellent conversion transmission due to its adaptability into most Jeeps. Both 2wd and 4wd versions of the NP435 can be used equally well, and there are no inherent advantages to either one once you have installed our adapter assembly.
