size of transmission cooler ???
The avatar has a 408/727 combo like yours but with an 8" torque converter that stalls at 5000 rpm. I have a Champion Cooling Systems radiator but I do not run the trans fluid through the rad. Instead, it runs straight to a Derale cooler/fan assembly that I have wired with a manual fan switch.
I have a trans temp sender mounted in the trans out line to the cooler. I drive this car on the street as well as at the track. Trans temps (without the fan turned on) on the street are in the 170-ish range unless I stand on it. Then they might go up to 185-190 and I flip the fan on which will pull it back to 160 or so where I turn it off. At the track, I see 185-190 at the end of the 1/4 mile (11.0x good air to 11.20 on a 95 degree day), turn fan on, back to 160 by the time I'm back to my pit.
You can see the cooler here when I was putting the car together.
The avatar has a 408/727 combo like yours but with an 8" torque converter that stalls at 5000 rpm. I have a Champion Cooling Systems radiator but I do not run the trans fluid through the rad. Instead, it runs straight to a Derale cooler/fan assembly that I have wired with a manual fan switch.
I have a trans temp sender mounted in the trans out line to the cooler. I drive this car on the street as well as at the track. Trans temps (without the fan turned on) on the street are in the 170-ish range unless I stand on it. Then they might go up to 185-190 and I flip the fan on which will pull it back to 160 or so where I turn it off. At the track, I see 185-190 at the end of the 1/4 mile (11.0x good air to 11.20 on a 95 degree day), turn fan on, back to 160 by the time I'm back to my pit.
You can see the cooler here when I was putting the car together.