i am in NE Iowa and it gets cold here and i know what you mean by smoking up the garage.
based on the 10 up to 1 minute i would suggest the fluid is slightly low,
we don't get good cooler flo and pressure and good mainline pressure on the dyno unless the fluid is at the correct levels.
1/2 to 1 qt low on fluid is a major cause of no movement cold for 15-30 seconds on a thm350 trans in chevy and gmc pickups since new (67 or 68) and the cause is the dipsticks dont register correctly and the filter being bolted directly to the valve body are in the high part of the pan.
a thm 400 with deep pan where the filter is located within 1/2 inch of bottom does not have these problems.
if more fluid does not correct it and you may try backing in the garage if it goes into forward better. if it is low fluid it should cure both reverse and forward. but just backing in may get a little smoky.
don't want to get long winded so if anyone has any transmissons with modulators instead of tv cables email me and i will fill you in on cold weather problems on thoes trannies.
dave goerend
goerend bras transmission
based on the 10 up to 1 minute i would suggest the fluid is slightly low,
we don't get good cooler flo and pressure and good mainline pressure on the dyno unless the fluid is at the correct levels.
1/2 to 1 qt low on fluid is a major cause of no movement cold for 15-30 seconds on a thm350 trans in chevy and gmc pickups since new (67 or 68) and the cause is the dipsticks dont register correctly and the filter being bolted directly to the valve body are in the high part of the pan.
a thm 400 with deep pan where the filter is located within 1/2 inch of bottom does not have these problems.
if more fluid does not correct it and you may try backing in the garage if it goes into forward better. if it is low fluid it should cure both reverse and forward. but just backing in may get a little smoky.
don't want to get long winded so if anyone has any transmissons with modulators instead of tv cables email me and i will fill you in on cold weather problems on thoes trannies.
dave goerend
goerend bras transmission