transmission cooler

[tonpartain]

I saw the thread on the tranny cooler and, not wanting to hijack it, thought I'd post this as a new topic....

My c-6 transmission had a separate transmission cooler (i.e., the lines ran directly to the cooler and not through the radiator). Is this sufficient or should I re-plumb the setup?

[69bumptruck]

I saw the thread on the tranny cooler and, not wanting to hijack it, thought I'd post this as a new topic....

My c-6 transmission had a separate transmission cooler (i.e., the lines ran directly to the cooler and not through the radiator). Is this sufficient or should I re-plumb the setup?

I'm not real familiar with the C6, but it's only a matter of bending a few lines, and some fittings to run it thru the radiator. IF your radiator is set up for it that is. It definately wouldn't hurt. Did it come factory like that? Is it a daily driver? If you haven't had heating problems thus far, you could probably leave it.

[Thunderfoot]

It should be fine as the external cooler like that are way more efficient then the ones in the radiator.
That is how I have the one on my 68 stang…

[gonzalo medina]

I was wondering the same thing. I purchased a new radiator for my truck which seems to be set up for oil cooling. It seems like to much of a hassle to later be dealing with leaky lines. I have a brand new tranny cooler but I to am comfused about the connections.

[mr.skaggs]

i'm wondering if you take a condensor fo ac and make a trans cooler going to pull 36'fithwheel with my 69

[71PA_Highboy]

Bad Idea on the AC condenser unless you are using it as a bypass cooler... too much restriction.

As a side note, too cold is bad for a tranny too... So if you are just running an external cooler in sub zero weather you are risking damage to the tranny also.

IMHO, the best way to run a tranny cooler is in line with the rad-based cooler... tranny -> ext cooler -> radiator -> tranny.

This method reduces the heat put into the cooling system by dissapating the heat thru the ext cooler first, then second cooling by the radiator fluid. And on Cold winter days, the rad will actually warm the trans fluid so that it isn't too cold.

Just another ,

eric

[oldschoolrods]

IMHO, the best way to run a tranny cooler is in line with the rad-based cooler... tranny -> ext cooler -> radiator -> tranny.

This method reduces the heat put into the cooling system by dissapating the heat thru the ext cooler first, then second cooling by the radiator fluid. And on Cold winter days, the rad will actually warm the trans fluid so that it isn't too cold.

eric

I second this mine was plumbed as just a external cooler a while back and when i used to drive it in these nice PA winters the trans would shift worse

[BobbyFord]

IMHO, the best way to run a tranny cooler is in line with the rad-based cooler... tranny -> ext cooler -> radiator -> tranny.

This method reduces the heat put into the cooling system by dissapating the heat thru the ext cooler first, then second cooling by the radiator fluid. And on Cold winter days, the rad will actually warm the trans fluid so that it isn't too cold.

eric

I second this mine was plumbed as just a external cooler a while back and when i used to drive it in these nice PA winters the trans would shift worse

Mine only has the external cooler.
We don't have winters in California.

[MaxKlinger]

As a side note, too cold is bad for a tranny too... So if you are just running an external cooler in sub zero weather you are risking damage to the tranny also.

That's right. To get around this, you can use a valve with a thermostat in it. When the transmission is cold, the valve directs the fluid around the trans cooler back to the transmission warming it up. This is very useful in the winter. If and when the transmission gets warmer than the thermostat set point, the valve directs the fluid through the external cooler, important in the summer season or when handling a load.

That's what I would do if I bought another automatic transmission vehicle. I'm going to avoid it altogether by driving standards from now on. NP435 for the win.

[69rangerman]

I'd thought about skipping the radiator too, but then I replaced my radiator. It was too easy just to run it in line while putting the new rad in.

[ToughOldFord]

All the automatic trucks that I've had that had external coolers still had the radiator cooler hooked up as well.