Thanks Mike.
After posting this, I spent another hour or so googling (and posted on another forum as well), found little, but what you said seems to be the case.
With 71 & up, each end was a different spline count so it only goes in only one way; I suspect that is why most places don't bother talking about this specifically.
I did find people saying they changed to 26/24 after 70 because the assembly workers put those in backwards.
The 64-69 was 24 on both ends, and my 64 Ford Shop Manual doesn't say which way to put it in. I'm wondering if the 64-69 has the same length splines on each end, so that is why it isn't mentioned.
After posting this, I spent another hour or so googling (and posted on another forum as well), found little, but what you said seems to be the case.
With 71 & up, each end was a different spline count so it only goes in only one way; I suspect that is why most places don't bother talking about this specifically.
I did find people saying they changed to 26/24 after 70 because the assembly workers put those in backwards.
The 64-69 was 24 on both ends, and my 64 Ford Shop Manual doesn't say which way to put it in. I'm wondering if the 64-69 has the same length splines on each end, so that is why it isn't mentioned.
The 64 1/2 c-4 the pump would have an o-ring on the outside diameter. I think this was until 69, when changing to 70 + internals the front drum, direct drum, pump and main shaft change, Along with the #3 washer which no one every mentions but that washer changed in 1970 to 1986. The front main shaft should have a short and long spline the longer end goes toward the converter. I am in the process of rebuilding mine and have done a tone of research. By the way I would bet the valve body has been changed also 64 1/2 -66 have green dot valve body small dot, drives normal 1st, 2nd and 3rd gear, large dot 2nd gear only for snow driving. I f you need anymore transmission parts I have a great place I deal with. Don't know If I can post on this forum names of places, wittrans. Thay have good used parts and new very nice pricing I paid $40 for a 67 valve body
The front pump has a 70's part number, and it does have an o-ring around it. That outer most diameter is the same. It is the inter-most diameter (where the input shaft goes) that changed; mainly because the input shaft is a larger diameter than the 64-66.
I too found almost nothing about the #3. However, the guy at the transmission place I ended up did, so I lucked out.
Thanks for confirming the shaft orientation. I did find somewhere that putting the long end into the tranny first would cause things to hit.
The valve body is still 64. The part number is on it. Also, the car does behave like the green dot.
Thanks for the offer on a parts place, but I did finally get it back together a couple weekends ago, and the engine/tranny got back in this past week.
I too found almost nothing about the #3. However, the guy at the transmission place I ended up did, so I lucked out.
Thanks for confirming the shaft orientation. I did find somewhere that putting the long end into the tranny first would cause things to hit.
The valve body is still 64. The part number is on it. Also, the car does behave like the green dot.
Thanks for the offer on a parts place, but I did finally get it back together a couple weekends ago, and the engine/tranny got back in this past week.