904 Governor Replacement

AJ/FormS said
is the one I took the tail off three times to get the governor right. lol.

Op
The KD can only do so much, even if you crank up the line pressure.
If you're gonna keep the auto upshift feature, then the governor is gonna need fine tuning. and if you swapped out your rear gears, for say 15>20% more, then, there's no way around it. Which is why most guys just throw in the towel, and go to a full-manual. (no slur on on you, 4mulas, nor anyone else) , that's just how it is.

But I gotta tell ya, a well tuned governor in a semi-auto, with a working PT downshift, and a higher than factory stall convertor, all together, is a dream come true. So, so, much fun.

Thanks @AJ/FormS I got a lot sorted out engine wise and am now working performance. My trans was set up from the factory with a 318 and a 273 peg leg rear. I now have a 340 with 355ish sure grip. It obviously shifts way to soon but when I manually shift at 2800 it’s great. Been thinking about a 4speed manual conversion but dam I might be dead before I could finish that project given all that I would have to do.

So I was thinking of something quick like a heavier, governor weight. But quite frankly, I know nothing about 904 and automatic transmissions.