93BlackT/A

Looking to put a transmission cooler on my car and have a few questions. First off the car is a '99 TransAM auto obviously. What size cooler and brand fits best on these cars and where have you mounted them? Not looking to mount down by the air dam or as I hear "dope" mounting, I want it in front of the condenser most likely. Do I need to install a thermostat valve, or just run open all the time?

I also heard that I shouldn't run the fluid threw the coolant radiator like stock set up. Why is that? I would think having it run threw the radiator then threw the trans cooler and back would be good and help cool it down even more. What's the scoop on that?

Any pictures of peoples install would be great. Thanks for the help and idea's in advance.

93BlackT/A

This forum on?

JRENIGAR

iTrader: (37)

I ran a hayden 405 infront of the condenser and tied it into my stock cooler for a bit until the 4l80 swap happended. Now Its got 6an fittings from the trans to 3/8 rubber trans lines straight into the hayden cooler. Its not gonna be a daily driver running in cold weather very much so Im not worried about the fluid not heating up to running temp quickly like the stock cooler is supposed to help do.

mjs1012

iTrader: (36)

Run the biggest cooler you can. Many people run a b&m 70264 which is a 24k gvw stacked plate style cooler so it does a good job cooling. I currently have a large tube and fin style cooler mounted on my radiator and will be switching to the b&m I mentioned.

The main benefit of bypassing the stock cooler in the radiator is it cools better. The stock cooler heats up the fluid quick and temps generally stay higher than if you had the cooler by itself.

Ive had it set up both ways, with and without the stock cooler and the temps with the stock one were always in the 190 range. After I had the cooler by itself temps went down a good amount and would cool down alot quicker.

93BlackT/A

Ok. That makes sense. Thanks for the info guys. Any reason to run a thermostat valve for the trans cooler?

98CayenneT/A

Negative kemosabe

93BlackT/A

Thanks

01ssreda4

iTrader: (96)

B+M 70264 on the condenser is the easiest and simplest way. Period.

98CayenneT/A

True story, my exact setup along with many others

93BlackT/A

Anyone have luck squeezing in the B&M 70274 SuperCooler? Also how does the Moroso 41205 cooler work compared to the B&M plate style?

I want to make sure I have enough room for the trans cooler and oil cooler to fit. Anyone ever run the engine oil threw the stock trans cooler in the radiator?

01ssreda4

iTrader: (96)

I have a 274, love it. It has threaded fittings so you'll need to account for that during your install.

Braided line install:
https://ls1tech.com/forums/automatic...oler-line.html

Mine is in the bumper with a fan mounted on it.

93BlackT/A

Looks awesome! I think that is a little to much gutting of the bumper for this guy though.

I wonder if I can get that cooler in front of the condenser mounted like a stock set-up? I like the bigger cooler for sure!

93BlackT/A

What would be the reason to go with such a larger line like the -8AN vs the stock size of -6AN? Anyone know what size ID and OD -8AN and -6AN are?

01ssreda4

iTrader: (96)

3/8ths vs 1/2. So 1/4 more flow capacity.....theoretically. And yes you can fit the 274 on the condenser, just barely.

93BlackT/A

Think with that cooler there would be room for a oil cooler 8×11?

01ssreda4

iTrader: (96)

Most likely.

ChristopherWelkin

Bypassing the stock cooler would take the car longer to warm up the trans fluid to operating temp right? So it's better to keep it with the extra cooler if it's a daily driver?

01ssreda4

iTrader: (96)

No, its better to keep it in cold climates. You dont want your trans fluid hot, rather you want to keep it as cool as possible as long as possible. Example, your trans runs 190 most times which is fine, mine runs 130 most times, the enemy is say anything over 220. Well one or two passes at the drag strip and youll most likely be 220 or higher where I wont be. Transmissions take a while to cool down when shut off, so yours will still be up there even if you let the car cool an hour. I wont have to worry about it. See the difference? Bottom line is, with the stock cooler it will most likely run at or near coolant temp since they run together in the radiator, and extra cooler will slow the warming but it will reach it eventually. Seems counter productive in most cases.

Cajun ELESS-ONE

i just installed on a few weeks ago. got it for free. its a plate style. i got the line and barb fitting from the auto parts store. drilled holes in the bottom of the core support where the bottom of the radiator is. there is a metal lip about 1.5 inches. marked and drilled the holes. used the metal clips gm uses for body panels. http://www.clipsandfasteners.com/1_4...pas2969-25.htm (see the link) and the bolts that go with them(had several spares) slid the clips over the holes and bolted the cooler down. very sturdy. ran my lines (kept the stock cooler) through the front lip( just drilled 2 holes) very clean install and not too hard

mrvedit

A 3/8" line is .14 square inches (.375 squared).
A 1/2" line is .25 square inches (.500 squared).
Therefore the 1/2" (inside) line has about 80% more capacity.
However, as mentioned that is "theoretically". The cooling fluid is restricted through the TCC valve in the pump. The stock line is even smaller at 5/16".
I run AN-6 Teflon lines and even closely spaced runs at the track only raise my trans temp to about 195F.
Whether you chose AN-6 or AN-8, teflon lines have a smaller outside diameter which makes routing easier.