Engine blocks and large housings are prismatic, multi-sided parts that reward horizontal machining centers with pallet changers and 4th-axis rotation — you machine multiple faces in one setup and keep the spindle cutting while you load the next pallet. Rigidity and chip evacuation matter for cast iron and aluminum blocks.
Production engine work is classic HMC territory; smaller shops use a 4-axis VMC. Value HMCs and pallet systems at The Machine Blue Book.
Get a real number from a Machine Blue Book specialist — free, no obligation.
