ok so these are the "mod's" i have, 74mm tb, v8 airbox, 275/35 rear. that is about it. the work i had done on transmission are the new conductor plate, tcc solenoid, and a sonnex valve overlap sleeve kit.
with that said, here are the issues. (have had these even before the tranny. work listed)
the only way to describe it is the transmission surges downward a couple rpm? specifically when im on cruise about 60mph there is a turn right after an overpass, while i descend the rpm's drop a bit, then once i'm done going downhill the rpm's goes back to where it was. also at residential speeds (25/35 mph) she shifts into 1st and 2nd at 2500 rpm but then third is 2k and then i think she goes into 4th then there is the drone. she kind of slams into 3rd if im going up a hill or on ramp launch (unless i slap stick).
i have manually downshifted at a stop then upshift into 2nd, then when im launching i put her into 3rd then there is hesitation and the down surge then she goes about her business.
i think it's either valve body related, or the wrong tranny. fluid, maybe a wheel speed sensor? i have an appt. monday to have them check the solenoids for lack of resistance and see if anything else funky is going on there. it seems to be isolated between 3rd and 4th. she never slips and the engine runs strong, uphill no problemo.