Trans. cooler or Syn. fluid

[Ted Stryker]

I'm looking for a little extra protection for my 700 R-4 transmission (Chevrolet 1500)... I know the big answer would be to install both, but I'd rather do one or the other... Looking for your opinion which one would be better for my tow vehicle...:confused:

[chynewalkr]

you could put an aluminum pan with the cooling fins on, more capacity too. just another option for you

[Rickracer]

The cooler you can keep it, the longer it will live. If synthetic fluid is out of reach price-wise, go with type F. It will shift a bit firmer, and type F can withstand higher temps before breaking down. :cool:

[Mach2]

From my race cart days, there is such a thing as too big a trans cooler. Transmissions work best when their fluid temps are around 180-190 degrees. Any hotter than 210 and the reliability/life of the transmisson drops exponentially. Running a transmission too cold and the fluid does not get hot enough to burn off any condensation, and in extremely cold climates (like mine) the fluid remains too thick, affecting line pressure and its ability to lubricate.

[Rickracer]

...:D :D . I was talking in practical terms. I agree with your specifics Mach2, but it's not likely anyone would/will install a cooler that big or that efficient. Most parts places don't keep anything like that in stock, so one would have to make them get out the book, and order it. :cool:

[captcarb]

Talk to these guys (http://www.transmissioncenter.net/) they really know their stuff.

Jim

[Psyco]

700-r4 are WEAK transmissions from the factory. BIG tranny cooler and extra capacity pan will significantly extend tranny life. Wouldn't waste my time with the syn. fluid. Type F is too cheap to pass up and werx good, too.

[msc5195]

owns a transmission shop and is a regular here. I am sure that he can get what ever you need at a competative price. Check him out. www.riversidegarage.com

[Ted Stryker]

Thanks for all your replies fella's.. My local auto supply store has Hayden brand coolers rated for 5500 lbs. and one for 10,000 lbs... Guess I'll just make a call between those two.. Thanks again guys..

[Psyco]

Use a "stacked plate" cooler. It is more efficient and durable than the old fin and coil. They are also more compact. Mount it after the the fluid exits the radiator. Good luck.

[Rickracer]

I always run an 18,000 GVW cooler or more on hot street cars with loose converters. :cool: