I break down the Cummins 12 valve 6B, 6BT, and factory aftercooled 6BTA and explain the aftercooled version. Same engine family, different depending on how the intake air is handled. I also explain why adding a coolant based aftercooler to an early non intercooled Dodge Cummins engines in first gens is probably way simpler than most people think. Question is, has anyone done it? #cummins #12valve #6bt #6bta #dieselengine #mechanicaldiesel #dieseltech #turbocharged #aftercooler #truckengineering