Re: Adjusting shift points in a TH350... to where?
Set the governor on a hard surface, and bend the ends of the nails towards the center, or towards each other. I just tap them over with a small hammer.
Yes the weight on the left will usually get you about where you want to be. And yes grind both of the smaller weights to look like the one on the left.
You may have to play with it a bit to get it where you want.
The shift valve springs in the valve body have an affect on this as well, so there isn't a set amount of weight that can be removed.
Also on the factory performance governors, they had a large hole drilled in the outer weight, and some of the weights were thinner, so lighter, even though they didn't appear different at first glance.
The outer weights seem to affect the part throttle 1-2 the most, so if your car feels like it shifts to 2nd too soon when you leave a stoplight at part throttle, work on these.
The inner weights affect the WOT shifts on the 1-2 and the 2-3, but always seem to make a slightly bigger difference on the 2-3.
If you get pretty crazy with them, you may have to go into the valve body and play with the shift valve springs to make it all shift perfect.
You could spend 2-3 full workdays getting one PERFECT but usually a couple of hrs and you can get one pretty close and be MUCH better.