TH400 - when is it supposed to shift gears

[kikkegek]

hi there,

My car seems to be running just fine. You can allmost not even feel it shift gears, thats how smooth the ride is. Only when I open up the throttle a lot you can feel it shift from 2nd to 3rd gear.

Now usually it will change from 1st to 2nd pretty fast...anywhere between 6 to 12 mph....and then it will change from 2nd to 3rd at about 20 to 25 mph.

is this normal for a TH400 with 1:4.1 gear ratio?

I recently connected a TACH and it shows about 3000rpm at 55 mph...

also I have never ever been able to let the tranny downshift when I hit the throttle hard.