GM 6L80 Transmission Information Thread

[Geotrash]

New Question for Nick or Robert (transgo)
I am thinking of relocating my trans external fan forced cooler (for a couple of
reasons). I see that ICT billet has a nice adapter that mounts to my 6l80e
and I can just use only AN lines - my preference.
They make it in a 6an and 8an..
My question is there any advantage or disadvantage to go with the larger 8an
lines from trans to radiator to ext cooler then back to trans ??????
IDK if that changes pressures that would affect anything.. I would think the larger line
would flow a little bit more volume is why I ask.
Right now I'm running the factory steel lines in and out of trans case... with #6 lines
between radiator & ext cooler.
My mods are in signature

I don't know the answer off-hand, but you should be able to easily calculate that based on the ID of the smallest points in the system. The only thing the larger lines would potentially do is 1/ reduce the frictional losses within the hoses, but that's only a tiny fraction compared to any choke points in the fittings and ports on either end of each line, and 2/ give you larger and less restrictive fittings on the hose ends. But if the ID of the fittings at the radiator, at the external cooler, or at the transmission, are smaller than the larger AN hoses and fittings, the larger size AN won't really matter.

 

[Foggy]

I don't know the answer off-hand, but you should be able to easily calculate that based on the ID of the smallest points in the system. The only thing the larger lines would potentially do is 1/ reduce the frictional losses within the hoses, but that's only a tiny fraction compared to any choke points in the fittings and ports on either end of each line, and 2/ give you larger and less restrictive fittings on the hose ends. But if the ID of the fittings at the radiator, at the external cooler, or at the transmission, are smaller than the larger AN hoses and fittings, the larger size AN won't really matter.

I was kinda thinking the same thing... I've done several fuel system projects and
that's kinda the case - except you can just crank up the pressure at the pump and/or
regulate it with external regulator.. So bigger is better IF you need "flow"
Always appreciate your feedback !!!

Anyone else want to chime in ???