pcs9449

iTrader: (58)

Installed a Transgo HD2 kit and TCI SF3500 converter in a 2000 T/A this past Sunday and noticed that there was "no" 3-4 accumulator spring. Has anybody ever experienced or seen this? Tranny looked great inside so I don't think there were any ill side effects. Trans seems to shift great now with the 2 washer setup, the SF3500 really softens up the shifts, but they are a lot quicker and not harsh which is perfect.

Sean

jxaxsxoxn

iTrader: (2)

I've seen it. Most come from the factory like this, it basically disables the accumulator since there is no spring to dampen anything, the piston always stays bottomed out.
You can usually block the 4th accumulator feed to get zero accumulation and hardly be able to tell.

pcs9449

iTrader: (58)

Thanks jxaxsxoxn, I didn't know that. Does it firm up the shift or soften the shift with this practice? I've done a couple of 4L60Es, but this is the first one I have seen w/o a spring. Been using the Transgo method on the 3-4 accumulator with good luck.

Sean

Craig Burnett

don't forget guys, accum pressure is opposed by tv pressure- so even with no spring in this type of system, there is hydraulic pressure on other side of piston- spring (rate) - (physics function here) is really for tuning accum rate to vehicle as 60E'e will go in 4 cyl. s-10 to hot v8 and s10 body to light 3/4 ton 4x4- ---------- jx- I'm only trying to help here- i have been rebuilding for 31 years- talk with the guys at transgo often- (mainly larry, glenn and gil himself on occasion) not trying to be a smart *** just trying to share info- i am learning a lot here too on the later type eng mods- suspension etc. this is pretty cool. hope to be friends with everyonee here- (kinda hard these days it seems) craig