Tranny break-in

[J-440]

 Evening all.  I have a rebuilt tranny with a Gear Vendors OD unit, a deep pan, about 5 ft. of fluid lines going to a cooler.  My question is, how long does it take for a transmission to "work"?  I've got the car on jackstands.  I start the car, shift to reverse, and the wheels slowly start turning.  Unfortunately, I can't stay in the garage too long as I am running open exhaust and the fumes are killer.  Just wondering what the official time is for the wheels to start spinning normally.  Yes I will turn the car around but for now, this will do.  Thanks again.

[RECHRGD]

Let it idle in neutral for awhile.  That will get the fluids moving.  Then check the fluid level as it may be low after filling the converter.

[J-440]

 Yup, you were right RECH.  I was just a little impatient.  I ran through the gears and the wheels spin nicely. Thanks for the quick response.

[RECHRGD]