A904: 1-2 shift happens early despite governor weight- any way to adjust this?

d55dave said
You have to change the 1-2 shift spring in the valve body. In addition to the governor weight, which it sounds like you have already changed, you sometimes have to put in a heavier 1-2 shift spring to make both shift points match. A&A transmission sells them, they are cheap. You will have to pull the valve body to change it.

As it is, your wide open throttle shift points should be higher, nearer 5800 as that is the weight you put in. Make absolutely sure that your tv (throttle valve, kickdown) linkage is properly adjusted, all the way back at WOT and all the way forward at idle. By this i mean the actual lever on the trans.

Damn. If this requires changing the spring, I'll have to write it off as a tax on ignorance and leave it be. I don't foresee pulling the transmission again any time soon.

I'll double check the linkage...I did my best to adjust it as you described but perhaps this situation is an indication that I didn't get it quite right...?

Johnny Dart said
What kickdown linkage do you have Factory or Lokar ?
Could be as simple as a kickdown adjustment.

Stock kickdown linkage with a lengthened rod...as above, you could be right. I just hope that I haven't damaged anything if it has been wrong. After 3-5k miles since the rebuild, the fluid is still bright red, no burnt smell...for whatever that's worth.

d55dave said
The kickdown adjustment will affect both shift points the same. If there is a split between the 1-2 and 2-3 that you want to correct you need to use the A&A 1-2 springs to make the shift points match.

Yeah...that's bad news. I'm not sure why this never came up in my pre-rebuild discussion with the shop.

66jim said
Try first to lengthen the trans shift linkage, It seem to affect the 1/2 or than the 2/3 shifts in my experience. Make sure the linkage is set up like original.

Interesting...Which component in the shift linkage specifically did you lengthen?