LVJJJ
I'm Awesome
Been drivin' since 1962, but still don't know how automatic transmissions work. Gotta '94 k1500 GMC Burb in which I have installed a 383 stroker (incredible engine!!) Have been towing 5000 lb travel trailer in 4th on level roads. When going up a slight hill it feels like its shifting down but its not going into 3rd. Stays in 4th but rpms jump about 200. Seems like I've got an extra gear. Once up the hill and back on the level it shifts back up and rpm's drop about 200 rpms. Same thing can happen if I'm in third, usually against a headwind. Trans has not been running hot during these times.
So, what's happening when it "shifts down" slightly? I've heard it has to do with the torque converter "locking up?" or "unlocking?"
Since I do like to tow in 4th and I know that high temps are what kills auto transmissions, I was fortunate to find Saatr's 2010 post about upgrading to a B&M 70266 cooler. Ordered one and am going to install it before we tow from here in Blaine WA (end of the earth, can't go west into ocean, can't go north to Canada cause border is closed) to eastern Washington where August temps run in the hundreds (love ittttt!!!). Got a steep mountain pass to go over so i know I need better cooling, so will get the B&M cooler installed on Monday. Sure is a tiny little trans cooler the General installs in his tow package.
So, what's happening when it "shifts down" slightly? I've heard it has to do with the torque converter "locking up?" or "unlocking?"
Since I do like to tow in 4th and I know that high temps are what kills auto transmissions, I was fortunate to find Saatr's 2010 post about upgrading to a B&M 70266 cooler. Ordered one and am going to install it before we tow from here in Blaine WA (end of the earth, can't go west into ocean, can't go north to Canada cause border is closed) to eastern Washington where August temps run in the hundreds (love ittttt!!!). Got a steep mountain pass to go over so i know I need better cooling, so will get the B&M cooler installed on Monday. Sure is a tiny little trans cooler the General installs in his tow package.