Auto trans linkage
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Cross-Country
Joined: Oct 2002
Posts: 54
Likes: 0
From: leduc canada
Auto trans linkage
I have a 51 m1 that I have put a 302(manly version) and a c4 auto in.
The linkage was not right with the floorshifter (out of a zephyr), trans shifts would not line up with the marks on the shifter.
Well the c4 cratered in the driveway after 5' of movment, so I did a logical next step and pulled it out and sliped a AOD in its place but still have problems with the shifter.
The problem is the shifter arc does not match up to the arc on the AOD. How is the best way to build a linkage rod that will compensate for the two different arcs and the diferent elevations.
The linkage was not right with the floorshifter (out of a zephyr), trans shifts would not line up with the marks on the shifter.
Well the c4 cratered in the driveway after 5' of movment, so I did a logical next step and pulled it out and sliped a AOD in its place but still have problems with the shifter.
The problem is the shifter arc does not match up to the arc on the AOD. How is the best way to build a linkage rod that will compensate for the two different arcs and the diferent elevations.
Lead Driver
Joined: Apr 2002
Posts: 8,813
Likes: 13
From: Littleton, New Hampshire
Auto trans linkage
Cobra,
I've cobbled up my own shift linkage (column, not floor) in a couple of rods (only on GM transmissions though). You just have to experiment with the length of the transmission shift lever until the the arc on the lever matches the arc on the shifter. In the two rods I built I had to fabricate my own shift lever.
I've cobbled up my own shift linkage (column, not floor) in a couple of rods (only on GM transmissions though). You just have to experiment with the length of the transmission shift lever until the the arc on the lever matches the arc on the shifter. In the two rods I built I had to fabricate my own shift lever.
Post Fiend
Joined: Feb 2001
Posts: 6,328
Likes: 124
From: Iowa
Auto trans linkage
Cobra
I'd head over to the transmission forum before you let the smoke out of that AOD. Unless you have already addressed the cabling issues. You can destroy an AOD in a couple miles if all isn't right.
I'd head over to the transmission forum before you let the smoke out of that AOD. Unless you have already addressed the cabling issues. You can destroy an AOD in a couple miles if all isn't right.
Fleet Mechanic
Joined: Sep 2002
Posts: 1,622
Likes: 3
From: okla
Auto trans linkage
Here's what I do on column shift linkage[never tried on floor]. I make my downrod from column, I attach a pencil so that it is pointing at the trans, I use a piece of metal [1/8--3/16]and attach it to shift lever by what ever means I've decided on,[this piece at this time is just a square big enough to make final piece from], then I put trans in park and column in park and mark an arc on the metal plate, then trans to neutral and column to neutral and make an arc, where these two arcs cross is the place to attach downrod.I hope this makes some sense. I saw this in an article in Rodders Digest magazine years ago and have used it successfully.One thing you should be aware of, Ford used tho different levers on AOD.If I remember correctly, if it points up it's for column shift, down is for floor shift.They can be changed by removing valve body.Maybe this will get you started.
Thread Starter
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Cross-Country
Joined: Oct 2002
Posts: 54
Likes: 0
From: leduc canada
Auto trans linkage
Thanks for the help everone. I had a brain moment today and drew it out full size on a peice of paper and found the problem. The problem is the radius of the shifter is 3 1/4" for a 55 deg sweep and the radius for the trans is 2 1/8" for a 60 deg sweep. There is just no way to make up the diference with just one rod. The solution I came up with is increase the trans length by 1 1/8" so that the arcs are the same length then one rod will work just fine.
PS the AOD is from a colum shift but the pattern is the same as the c4 that I pulled from the truck. Thanks again
PS the AOD is from a colum shift but the pattern is the same as the c4 that I pulled from the truck. Thanks again
