Updating the 4l60e
In 720° of crank rotation, a four-stroke cycle piston engine (two revolutions = 4 strokes) ingests its rated displacement (ignoring volumetric efficiency issues and the like) of air.
Some also had a longer shift shaft for the MLPS.'97 - '99: These years have the ‘new’ style lubrication, where there is one oil cooler line behind the bellhousing and the other being farther towards the back of the transmission.
They were also known to have a crappy connector that passes through the case.
Most have had them updated by now, but there are still some that haven't and might need replacing.
Your other option is, if you're going with an aftermarket torque converter anyways, is to have the torque converter made with the correct offsets and mounting pads to bolt up to the stock 4.8/5.3 flex plate. (https:// Part Numbers:19260102 FLYWHEEL12563532 SPACER19257940 BOLTS 6Terminal pinout wires "A" and "B" from the pressure manifold are connected together and connected to the ground side of "Shift Solenoid A".
Terminal pinout wire " C" from the pressure manifold is connected to the ground side of "Shift Solenoid "B".