A833 - are they usually a hard box to drive?

acpat said

1st. get whatever is in that transmission out of it. pull drain plug and drain it.

2nd. put whatever you want back in it so we can rule out the fluid causing it. I use 50wt kendall motor oil. do not put anything synthetic in it. mopar 4 speeds operate on friction and synthetic fluids counter the transmissions design.

Click to expand...

X2, change the fluid, and do not put synthetic fluid in it. Synthetic is too "slipery" for the syncros and causes hard shifts.

Personally I am a fan of atf in them, it was recommended in the factory manuals in cooler climates. In my experience it works great and makes for a nice shifting 4 speed. Just my opinion though.