Don’s experience below is similar to mine. I also hear a “growl” coming from the bellhousing. If I need a torque converter should I get one with a stall a little over stock like a 2800-3000? Would a stall be beneficial in 4- low type driving or a hindrance?
sometimes even when I feather the gas as light as I can, it refuses to shift until 3200 rpm. Sometimes it hits hard when it does shift sometimes not. Sometimes it shifts like I don't have the kickdown attached and is in 3rd by 20,
Sometimes I get into it sorta heavy and it shifts by 2000 rpm, sometimes it really slams 4th, sometimes it doesn't. This it does probably 1/4 of the time and not usually on consecutive times of shifting thru the gears.