Automatic Transmission Cooling

[jmcarter]

Need to put a new one on the stocker and rather than running braided lines forward I was looking at the heat sink style that can mount along the frame rail and close to the trans. Anyone offer their experience on running this style vs more traditional means? Whatever I install needs to be absolutely leak proof as possible, don't want to run the risk of a ridiculous fine from NHRA for depositing transmission fluid on the track.

Thanks

[Dave Ribeiro]

Jim,

Don't know what kind of trans you have but most just run a loop& a deep pan ... ( GM's ) Also, change the fluid every 60-80 runs and you will have no-problems... Yes, trannys like to be run Hot , same as engine Oil ?.......... I thought you had a duster ? Maybe some one else can chime in .............Good Luck,

[Ed Wright]

My Rosslers uses no cooler. Plugs where the fittings go. Carl must do something internally to do that. Never a problem. Easier to get it up to temp when you unload. I would just loop the line.

[jmcarter]

Running a 904, may just loop it and put a guage in to make sure. And yes, frequent changing of the fluid is understood.

[gsa612]

We run th 350 and m200 both with no cooler,temp. never over 200. I would loop the line, not plug internally in case you ever want to sell the trans, been there. gsa612

[7423]

I had my AODE looped last year. This year I went to a C4 and added a heat sink cooler. Hot lapped it hard at our New Years bracket race, no issues and no leaks.

[Myron Piatek]

I've always run an auxilary cooler and just recently bypassed the radiator to help control engine temps. I've considered a heat-sink or something under the floor so I don't have to snake the lines all the way up front, but haven't gotten around to it.

But since high temps cause the most problems with automatic transmissions, I've been using Amsoil Supershift synthetic fluid. Synthetics are more resistant to heat and breakdown so you have an extra margin of safety. JW builds my Stocker 904's with nothing too fancy, just good parts. I've run them for several seasons with 1-2 changes a year and was told to keep doing whatever I'm doing whenever I bring one in to be freshened because they wear very well!

[njk53]

If you have a cooler in the radiator tank use that it provides the best cooling and alone should show stable coolant temperatures. If you don't have a in-tank cooler make yourself a loop, that will work fine. I have not seen any data out there that shows how well a heat sink performs and what the benefits are.

[NewHemi]

We run a 904 with an inline tranny cooler that mounts on the top of tranny brace. The turns and multiple fittings to bend around all of the corners did leave us with the need to check periodically, or put up with small leaks.

We check regularly, and ocassionally need to tighten one or two fittings.

But honestly, I am not sure you wouldn't have the same issues running lines to the front. The tranny takes a lot of hard abuse on your typical launch so any fitting is bound to loosen in time, and you really need to "nut and bolt" the entire car after every few runs, or you risk problems. So the checking for leaks is not that big a deal.

David
The New Hemi Guy

[GTX JOHN]

We just loop all our stockers.......Bracket cars that hot lap have coolers. Mark is right: Change fluid ever 20 runs........Just cheap Type F on Protrans. Let me know when you are ready to race one of our stockers....3 Races in a row in Vegas Mar/April!!

John