Turbo 350 or 400 trans cooler lines

[Mike Pearson]

Most in stock and Super stock don't use them is they are not effective. The cooler is used for such a short time during the run. The cooler only works when the engine is running and you have fluid circulating through the cooler and air running over the finned surface. Most run a deep pan with larger volume of oil. I have a powerglide and have never used a cooler. Never an issue with the trans from temp related issues. A few years ago we had a double race at an IHRA open. I won the first race and went to the final in the second race plus a couple of qualifying passes. No issues with the trans that day. The car was dead on consistent all day.

[HandOverFist]

I could never fully fathom the theory of a deep pan myself. Just a larger volume of fluid that once hot, remains hot...probably takes a tad longer to get hot is all.

[ss3011]

The reason for a factory deep pan is to provide a greater volume for the oil to expand in to . The factory dipstick is re-calibrated so the fill volume is the same . This is done mostly for trucks, where the trans temperature runs hotter . If you put a deep pan on the trans, and use a dipstick for a shallow pan , you will have extra oil in the trans and when it gets hot , it will expand up into the rotating parts . This will cause the oil to get whipped up into what will almost look like a milkshake , and cause all kinds of problems , like oil to come out the breather . If you run a deeper pan it there to get the oil away from the rotating parts .

[Dean Feiock]

Originally Posted by Greg Reimer 7376

Is there any negative consequence to simply plugging off trans cooler line fittings in the case on the Turbo Hydro 350's and 400's? I have a couple of those I want to use and the last owners of these transes had the trans cooler looped around using short pieces of neoprene hose. I don't want a hose failure and the resultant high pressure mess and wanted to know from some of you trans guys if these passages could be simply plugged off, or is there a need to recirculate the fluid through them?These are race only manual shift transes. No street use ever intended.

What we use. Clean and no chance of leaks. Will even clear a case brace on a TH200.