35 mph WOT power loss

Updates- the good and the bad..

The good first- i loosened and re-tightened the front band... finger tight and 1 turn out like @408 swinger has said in the past. Then I set the throttle cable and idle speed to 750-800 rpms. Then set KD to no slack. Set the idle screws to factory specs. Then set the secondary door to factory specs, when at factory I tightened it like 2 turns tight. Checked the idle vacuum, was getting about 14 mmhg vacuum reading.

Took it for some driving. Had to make the KD a touch tighter with the little adjusting nuts. 1-2 shift is around 22mph and 250p rpms, 2-3 shift is around 45mph and roughly 3k rpms. No flare and I can make it shift a touch earlier if I let off the throttle a bit for the 2-3 shift.

Right now I'm getting a slight hesitstion (no bog) when in 3rd and I go WOT, but I'm assuming its because... its kicking down into 2nd gear and the hesitation is just the time it takes to downshift :thumbsup::steering: power is good, I have traction and don't spin tires :( so that will have to be corrected at some point lol.

The bad- I'm done adjusting it. My OCD/ADHD is making me want to have it all 100% perfect, but its a 51yr old car transmission with only a 200 dollar rebuilt 2500 stall stock 11in converter. I dont think it will ever be perfect.

I found 2 brand new 727 vb's with cheetah shift kits in them, one dated 76 and one dated 86. Im going to get one and set it aside. Save up and get a ptc/edge/ultimate (?) converter with a higher stall that everyone raves about and then rebuild another 904 with those.

Final thoughts- for anyone reading this in the future looking for advice and having the same problems- good luck, enjoy your car and drive it as much as possible being happy you have one because some people would love to have one of these old cars with all their imperfections.

Thank you to everyone who always chooses to read and help me in my long *** round about threads with all my problems. I always appreciate it and one day may be able to pass along the help.

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