Hot Auto Trans
Thread Starter
Advanced
Joined: Oct 2015
Posts: 50
Likes: 2
From: Broadview Heights Ohio
Hot Auto Trans
Guys I have a 2000 C5 with a recently rebuilt 6.0L, 3.15 gears and a recently rebuilt 4l60E. When the trans was finished I installed an FTI 9.5 converter with 3200 stall. Everything shifts and operates properly (IE no weird noises, leaking fluids etc). My problem is high displayed trans fluid temp. I installed a trans cooler and had it routed through the radiator and was hitting 220 degrees. I routed it as a stand alone cooler and didn't see much of a difference, it hit the same top temperature, just took longer to get there. Do I piggy back 2 trans coolers? Any suggestions would be appreciated.
Thanks,
Tim
Thanks,
Tim
Melting Slicks
Joined: Nov 2009
Posts: 2,922
Likes: 219
From: West Branch, MI
Yes, put a second cooler on it. Plus you didn't state where the cooler is mounted. Is it right against the radiator? If so, its getting heat soaked. I've fought this battle for a while as have others. I installed a Dewitt's shorty radiator (my LS3 is supercharged) and originally, my trans cooler was between the intercooler and radiator. Works fair unless stopped in traffic, then it starts to creep up and get hot. If I get in a quick hit on the car, temps jump to 220-225 as well, then cools off to maybe 210 (still too hot for my liking). Solution for me was to bypass the radiator completely, add a second cooler and relocate the first cooler. I do not need the brake cooling air tubes as I do not track my car and normal driving doesn't overheat the brakes. So I mounted each of the coolers in the front bumper where the brake air inlets can get to them. One on passenger side, one on drivers side. The extra tubing and extra cooler work great. Hardly ever see temps over 175.
Thread Starter
Advanced
Joined: Oct 2015
Posts: 50
Likes: 2
From: Broadview Heights Ohio
Cactus- The trans cooler is mounted to the condenser, passenger side of the car. Its not sandwiched between the condenser and the radiator, rather on top of the condenser, and its positioned so it should get good air flow. So, I figure I'll take a run to Summit Racing tomorrow and return some parts I don't need and install a second cooler. Thanks!
Burning Brakes
Joined: Jan 2006
Posts: 788
Likes: 105
From: Olathe Kansas
HOT fluid route into trans at factory location..
The now cooled fluid that would normally go back to trans -- route it
to your aux cooler.. Then from aux cooler back to trans.
This way you get the best of both worlds AND if running in cool weather , you dont run
too cool.
This is the best way for a street car
The now cooled fluid that would normally go back to trans -- route it
to your aux cooler.. Then from aux cooler back to trans.
This way you get the best of both worlds AND if running in cool weather , you dont run
too cool.
This is the best way for a street car
Melting Slicks
Joined: Nov 2009
Posts: 2,922
Likes: 219
From: West Branch, MI
That's exactly how I was routed and it didn't keep it cool (and my radiator is WAY better at cooling than the stock unit). Every situation can be different.
Last edited by CactusCat; Aug 12, 2017 at 01:22 AM.
Le Mans Master
Joined: May 2006
Posts: 5,747
Likes: 224
From: Hillsboro Oregon
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Thread Starter
Advanced
Joined: Oct 2015
Posts: 50
Likes: 2
From: Broadview Heights Ohio
Racer
Joined: Jun 2016
Posts: 380
Likes: 67
From: Kelso Wa.
When I installed my Yank 3200 converter, the DIC indicated trans hot light within 3 blocks. The smaller higher stall converters have much more slippage, thereby creates a lot more heat. I then installed a Hayden 678 cooler and the temps on a 100 degree day in traffic never goes above 175, average temps are about 165. Of course this is with a middle of the road plate and fin type cooler which is supposedly 33% more efficient than a tube and fin. I hope your solution works for you.