A while back I read that the tranny has its peak shifting potential between 120-150 degrees. I agree with that because my shifts in the morning are weak when I first get going, when the temp increases to over 100 is when I see the typical FTVB shifts. My question is when racing in the 1/4 mile how do you guys heat the tranny without heating up the engine? or don't you have to heat it up at all? I figured you would want your tranny shifting at its peak potential when going down the track and also try to have your engine as cool as possible.

Thanks
Kurt

 

What warms up the tranny initially are the outlets that go to the rad. This is required for trucks that operate in extreme temperatures below minus 20F.

If you bypass the rad and go straight to the tranny cooler, the tranny will take longer to warm up but will not benefit from the rad cooling at higher temps.

So to answer your question, the truck is already set up for relatively quick tranny warm up unless you go to an outside source and add an in line heat source or some kind of block heater in the transmission pan.

TB