JRS02GT said:The term "modular" means that it is able to be built in multiple configurations. It can be buit as either a 2 or 4 valve motor, and can be built as a 4.6l or 5.4l motor. It makes the motor cheaper to produce in each application because a lot of the parts interchange from one model of the motor to the next.
Dragstr05 said:Just a name, nothing mechanical makes it a mod motor.