This my first go around with a trans brake.
Last night at the track, I was sitting on the line building boost.
Tree came down and I left with my best 60' of the day.
On the return road I looked at the trans temp gauge and it was at 300*.
TH400 with an external trans cooler.
Too hot?
Was I on the brake too long?
Yes, but where are you measuring the temp?
Try to keep fluid in the pan 200f or less if possible.
When searching for coolers, look at the btu transfer.
Depending on your application you may need a ice box.
No pics. I ran an deep sump aluminum pan on my powerglide. Drilled and tapped a beefy area on the pan for the bung. I used a B&M mechanical temp gauge. Never had any leaks.
sounds like you have it on the line coming out of the trans before the cooler. I used to have it like this and saw the same temps, if you were to keep the car idling in the pits the temps would go back to normal. I switched the sensor now and I get abt 200 is the hottest but usually in the 180s. Also a turbo car.
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