Ive check, and there is vacuum at the modulator, about 15-20 at idle. Turned the screw all the way in, still shifted at high rpms and shifted very hard. Turned the screw in halfway where the old mod's screw was, shifting got lighter but still shifted at high rpms.
So i turned the screw out all the way, nothing still shifting really high and still shifting hard. i was told from my buddy out west that if you turn the screw on the nipple of the modulator all the way out that you would have very fast shifting and it would be very soft, and if its all the way in it would be long shifts and it would be very hard. So i went to adjust it and it didnt do anything. I just replaced my Vaccum modulator to fix a shifting problem and the old one had a bad diaphram, I figured id start a new thread on this subject since its diff from my old thread.
