The 4 speed vs. the 5 speed, the 4 speed is a 3 speed with a granny gear, the 5 speed is a 4 speed with a granny gear, closer ratios, get up to 55, then drop it into 5th gear.
Not all 5 speeds are direct in 5th. The problem with 5 speed OD trans.' , is to make it they make the 4thposition the OD, so there is a big gap between 3rd and direct, so with a load, frequently cannot shift up until hill is topped. Many came with 2 speed rear axles, this was more workable.
Ed
Being that the truck can do 55 having a OD may not
be that important. My son's 46 2 ton hauls about
a 4,000 lb. load. He has never needed to shift the
rear into low.
How can you identify if the transmission is a 5 speed over drive or not?
I remember school buses in the late 60's early 70's
having 5 speeds. Jeffrey
