Ford Muscle Cars Tech Forum banner

1980 C4 automatic valve body

4263 Views 7 Replies 4 Participants Last post by  coastie1977
Hello everyone
I have a 1980 trans C4. I am rebuilding it in a Transmission class. long story short when I missed one night of class the other Knuckleheads in my group took the valve body apart and did not label anything. It has had a shift kit in it and now I have everything put back togather except there is a little brass plug about 1/4 round and 1/4" thick. i have tried to find anything about it with no luck. Can anyone help

1 - 8 of 8 Posts
Welcome.That plug i think goes in the 2-3 backout valve.Some kits block it off. It might be the cutback valve but most kits use a 1/4" ball or a blocker spring.
thanks for your info
I kinda miss discribded it. it looks more like a spacer of some kind and on the flat sides of it there are wear marks and fit almost all the springs in the valve body. i think i am just going to have to buy a new shift kit and set it up like the new one.
thanks again for your info and i will take anymore if anyone has any for me.
Get an ATSG manual - they have an exploded diagram of the valve body.

1967 Falcon 4 door w/351C - Owner built, owner abused.
70 Mustang 302 / 02 Mustang V6 rag top, 04 SuperCrew parts hauler

<font size=-1>[ This Message was edited by: ckelly on 3/11/06 4:16am ]</font>
See less See more
i clicked on the page you posted and i can not find a c4 trans in there anywhere. am i going nuts?
The ATSG manual is listed as a C5. It shows a C4 valve body in it.
I sent you 7 half meg photos of the valves in two separate emails. The valves and springs are laid out in the orientation they came out of the bores. This is a post-1970 vb so it should help.
The photo below shows the following in order starting on the left side the 1-2 transition valve the 2-3 backout valve and the backout valve spring. The other valve is the cut back valve.

It's a hosted image and this is just the thumbnail. It's on imageshack at original resolution.
Can't help you with the shift kit instructions though...

<font size=-1>[ This Message was edited by: R Code on 3/11/06 11:11am ]</font>
See less See more
R Code
I got pics you sent me and i dont see this brass spacer anywhere in your pics. the pic C4VB3 the valve on the left i think is the 2-3 shift valve. what whould happen if i put the spacer in the bottom of the valve and the valve body. i think it would increase the pressure needed to move the 2-3 shift valve and shift later. Am i correct. that space is part of a shift kit that this tranny has i think. what do you think? if not there then i looks like it might go with the spring and valve that the filter tang holds in.

Thanks i will take a pic of it tomm and post it to see what everyone thinks
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.