Originally Posted by
fingerchopper
It's a 1966 Ford 2ton grain truck with a dumping bed.
It has a 6 cylinder (300 ?) engine a 4 speed transmission with a split rear end. Does anyone know what type of transmission was used in these trucks.
There is a designation on the door
(Warranty Plate) of the truck that is old and damaged but I believe if says the truck is a model
F503 and the transmission is an
AF8
The TRANS code is A / F8 is the AXLE code. There should be a blank space between the TRANS & AXLE codes, but in some cases, Ford assembly line workers did not always do this.
Like I said though the tag is damaged and I could have wrong numbers in here.
They look AOK to me. 
Welcome to FTE
F503 = F500 2WD, 17,000 lbs. Gross Vehicle Weight Rating.
AF8 = A is the TRANS code / F8 is the AXLE code.
A = New Process 435 4 Speed Manual Transmission /
NO Warner T-18's were installed in F500 or larger trucks, F100/250's only. And...F100/250's could also have the NP435.
F8 = Eaton Model 13802 Two Speed Rear Axle / 6.33-1/8.81-1 / 15,000 lb. Rear Axle Capacity.
New Process 435: The cap used to retain the shift lever into the shift tower has two notches on it. Two pins that protrude from the tower retain it.
This cap must be
pressed down on, and
held down while turning it to remove it. I would not be a bit surprised if it's damaged.
People do not know about this removal procedure, use pliers to get the cap off...which tears out the two notches.
The trans has to be in neutral to remove the cap (B8T7220D), which is available from Ford for less than 8 bucks.
