Interesting Jeep work today. I took a TH400 tranny ( for a Quadratrac )to a trusted friend/ tranny guy and we installed a manual valve body. The manual valve body is just what is sounds like. It's still the same tranny, but, it must be shifted manually. Meaning move the shift lever by hand to change gears. So you just can't put it in drive and go.
One advantage of this is first gear engine brakeing on downhills. MoC would be the first to tell you, this is a huge plus on steep down hill trails.
It also functions as a shift kit to really firm up the shifts between gears ( read fast solid shifts, to the point of barking the tires when shifting on fast take off's.
Once a gear is selected or shifted into it will stay there, and not change until the shift lever is moved.
I have 3 th400's. one a friend gave me with Unknown miles or condition. one in the Jeep. And the one that came out of the black rust bucket with the snow plow and the 360 Jeep,
I chose the one from the black Jeep, based on info from the PO. And the correct choice it was. This tranny had $400 in upgraded Planetary and sun gears, the clutch discs' were like new, and a home brew shift kit that my friend said was top of the line.
The job took us 4 hours from start to finish. This included removing everything that could be removed from the tranny. I learned a metric crap ton of info. So much so I feel I could tear into one by myself.
When I asked how much I owed him for helping me, and he did most all the work, he said I didn't owe him anything!! Because I bought the parts, and he enjoyed the day. And I picked his brain all day.
I wasn't taking no for a answer, I gave him $250. I feel that still wasn't enough, for everything I learned, but he wouldn't take more.
He lost his daughter at 17 like I lost my son, so there is a special bond between us.
So in the next couple days I'll be swapping transmissions in the Jeep, and I'll think of him everytime I drive it.
Here's most of the internals on the bench in no Particular order. They didnt need to be, be knew where they all went.
It was just a Incredible day!
He also told me all the things to watch for. And important tips when putting the tranny together. And what each part does.
I also learned about trans brakes, stall torque converters and why there important, adjusting the clutches in a top fuel funny car. ( so the tires don't break loose with 7000 horse power).
Edit, I know he won't read this post, but, thanks Charlie, your the best!