Transmission Cooler GVW?

bryanjeep

New member
Hi,
I am purchasing my 700r4 transmission cooler this week and I am wondering is one rated at 16,000 GVW good enough for highway driving and hard mudding?
 

Not if its packed full of mud. But yes a 16000 will be good. There pritty cheap, why not just get the RV cooler ?
 
New Hood Mount for TJ's

RV cooler? What is that? I am buying a really expensive transmission and want it protected. I am running through the radiator cooler too.
 

Running it through the radiator is the worst thing to do. Thats how most fail.
I would just stick to the external cooler. No point in heating the transmission up to 200 deg. just becouse the engine is that hot.
 
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I have always been told to run it through the radiator also. Cna anyone else back that up?
 
cj stuff

Most stock setups run the transmission fluid through the radiator, the liquid disipates the heat much quicker than air.

As for using or bypassing the radiator with an external cooler, I don't know. I think you'd be fine without the external cooler and using only the radiator unless you did a lot of heavy towing.

I can't see a 700r4 building much heat in a light SWB jeep.
 

Please Pray for yet another

The guy I am buying the transmission from really recommends (living here in the deep south) to have another cooler with the radiator.
 
if the rad cooler fails, It pumps anti-freeze into the trans. Instant kills the clutch packs..
Take a look at the HD line if GMCs They are now using a external cooler only.
 
Don't ask me to explain it's effects on the internals of a transmission, but this is what a guy that has built a few of the autos for some of the hot street cars and bracket cars in the area told me: That fluid has to perform several tasks, and to work just right it has to get up to temperature. Use the factory cooler along with the external cooler, but you don't want to cool it down too much. If you are going to run a really big cooler then put it inline BEFORE the factory one. A small cooler is okay AFTER the factory unit, but you need to match it's rating to your vehicle more closely.
 

I think the smallest I have seen from B&M is 16,000gvw. I will probally get that and run both coolers. Chances of the radiator fluid leaking into the transmission are really slim.
 
bryanjeep, make sure you go ahead and stuff a good shiftkit in there too. TransGo makes the best one, but it's expensive. B&M and TCI are both okay, and either one works fine. A shift kit is seen as a bad thing by some people, but making the shifts happen quicker will extend the life of your transmission because it reduces slippage. Because higher heat is generated during the shift, reducing the amount of time it's spent shifting should make it run slightly cooler too.
 
the guy is building a special converter that can handle 300 + hp and large tires. I told him that I want a stock stall speed.
 
I run a TH400 in my Jeep and experience overheating problems from the engine on the road. It is fine on the trails. I used to have a B&M transmission cooler that it was cooled through. I have since ditched the B&M and run it through the radiator only. It still has the same problem. I also have an oil cooler in front of the radiator. I think that both the transmission and oil cooler were and are blocking air flow at speeds. I'm going to ditch the oil cooler and leave the transmission plumbed through the radiator then put an aluminum finned cooler along the frame rail in-line.
Try plumbing the transmission into the radiator then putting one of the finned aluminum ones on there that I suggested. It should do the trick.
PS...You are getting robbed for $1300. Call 911 stat. For $1300 you better be getting a lifetime warranty, install, bombproof build, coolers and transfer case adapter. Jeez, I can't even get someone to buy my spare Jeep TH400 for $100.
 

THis includes a crap load of performance parts and 1 year warranty.
 
Still too high. You aren't going to drag race the thing. All you need is a shift kit. No need for an aftermarket converter or HD clutch packs and bands. That stuff is for high horsepower only. My 400 is sitting behind a 360 with hot cam, pushing an Atlas, one tons and 40" boggers with no complaints.
Do what you like though, it's only money.
 
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