Texas Aggie
Observer
Been a long while since i posted, so thought I'd resurrect this thread. I've done a few small projects since the last update, including installation of this transmission cooler: Hayden 698 Transmission Cooler. I chose this cooler in part b/c it has an internal thermostat that bypasses the majority of the cooler until the fluid gets up to temperature (which probably takes about 3.6 seconds in Texas during the summer). Getting the grill off was easy (many YouTube videos show how), but this is the end result:
Based on my research, it's better to have the aux cooler downstream of the primary cooler. I disconnected the top transmission line and ran the engine for a couple of seconds to confirm it was the return line from the primary cooler to the transmission (the fluid came out of the radiator fitting, not the line). This seemed like the most obvious spot to put the cooler based on proximity to the return line and fitting.
For the GM applications, you have to buy an adaptor to connect the rubber hose from the cooler kit to the radiator fitting. I used this adapter 90 degree fitting because it has a 90 bend and put less stress on the fitting or rubber hose. On the left side of the cooler, I used two existing bolts for support (I barely had to elongate one of the holes on the cooler mount to get them to line up). For the right side, I used a bracket I had laying around and drilled small holes at the bottom of the radiator core support, making sure not to go into the radiator. There is a flange that extends down so you can see that your not drilling into anything that holds fluid. While I had the grille off I painted it black (using the Rustoleum Matte Black Trim and Bumper Spray Paint, available at Home Depot among others). My Chevy Bowtie was looking sad, so I blacked it all out and then did a 1/4 tape on the outline. The cooler isn't really noticeable behind the grille. By far the hardest part of the project was getting the rubber hose from the cooler kit over the end of the return line. It took quite a bit of effort to force it over the barb/flare on the end of the line, but it eventually got there.
Based on my research, it's better to have the aux cooler downstream of the primary cooler. I disconnected the top transmission line and ran the engine for a couple of seconds to confirm it was the return line from the primary cooler to the transmission (the fluid came out of the radiator fitting, not the line). This seemed like the most obvious spot to put the cooler based on proximity to the return line and fitting.
For the GM applications, you have to buy an adaptor to connect the rubber hose from the cooler kit to the radiator fitting. I used this adapter 90 degree fitting because it has a 90 bend and put less stress on the fitting or rubber hose. On the left side of the cooler, I used two existing bolts for support (I barely had to elongate one of the holes on the cooler mount to get them to line up). For the right side, I used a bracket I had laying around and drilled small holes at the bottom of the radiator core support, making sure not to go into the radiator. There is a flange that extends down so you can see that your not drilling into anything that holds fluid. While I had the grille off I painted it black (using the Rustoleum Matte Black Trim and Bumper Spray Paint, available at Home Depot among others). My Chevy Bowtie was looking sad, so I blacked it all out and then did a 1/4 tape on the outline. The cooler isn't really noticeable behind the grille. By far the hardest part of the project was getting the rubber hose from the cooler kit over the end of the return line. It took quite a bit of effort to force it over the barb/flare on the end of the line, but it eventually got there.