Transmission cooler with or without factory radiator 'cooler' / warmer?

Thoughts on plumbing in an aftermarket transmission cooler for my application / driving style & environment?

Gen1 SBC Chevy 350 w/ TH350 tranny in a '78 Jag XJS - 2400 stall speed
Daily driver and live in Texas - never anticipate driving on snow but may drive on nice cold-weather days; I could foresee 'occasionally' driving on days with temps in the mid 30's as the lowest from time-to-time.

Route the lines 'only' thru an aftermarket cooler or better to run in series and include the factory radiator?
Is the radiator recommended for warming up the transmission in my application?
I'm assuming the radiator is not needed but please chime in with thoughts.

I run mine through the radiator then the cooler. My thoughts on this is, the radiator warms the transmission up to operating temps and the cooler is extra protection with the added heat from higher stall speeds. Just my opinion though..

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Originally Posted by 36 sedan

I run mine through the radiator then the cooler. My thoughts on this is, the radiator warms the transmission up to operating temps and the cooler is extra protection with the added heat from higher stall speeds. Just my opinion though..

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Agree 100%. You really don't want to run just a cooler unless you do one like Jack (Henry Rifle) did ( http://www.clubhotrod.com/hot-rod-ta...texas-hot.html ) because it can keep your tranny from reaching operating temp and cause premature failure. If your cooling system is right it will keep the tranny happy.

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Originally Posted by rspears

Agree 100%. You really don't want to run just a cooler unless you do one like Jack (Henry Rifle) did ( http://www.clubhotrod.com/hot-rod-ta...texas-hot.html ) because it can keep your tranny from reaching operating temp and cause premature failure. If your cooling system is right it will keep the tranny happy.

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That's the exact setup I'm looking at putting on Rita.

As per the previous feedback, run it through the external cooler first, then the radiator. That way it will never run cold.

I had heard about running it like that too.