Thanks Rick 427, The vacuum reads at 15 lbs at idle which should still be enough for the transmission. As for the tranny? I have no info on it, because it was the tranny that came with my truck. It appears it may have been rebuilt at one point or someone painted the casing Ford blue. It's been acting like this for some time now. Time to fix it as it's pretty annoying when you jump on the gas pedal and then have to back off to get it to shift
I like the C4, but may opt to replace it with an AOD. I've also noticed the problem has gotten worse after changing the rear gearing to 3.50 gears from the 2.80's that were in it. The engine screams, but what good is it if you can't bang 2nd gear?