EAA - The Spirit of Aviation - The Comanche 400, featured here, is a significantly faster and heavier variant compared to the Comanche 250, largely due to the Lycoming IO-720 engine, developed
Remanufactured or Overhauled Lycoming Aircraft Engines:<br>IO-720-
AVCO LYCOMING IO-720 SERIES AIRCRAFT ENGINE PARTS CATALOG/ IPC | eBay
LYCOMING IO-720-A1BD Aircraft Piston Engine for sale - 2424483
IO-720 Series
N680JW | Twin Engine Aero Commander
ENPL-9578 Lycoming New IO-720-B1B Engine for CONVERSION AERO COMMAND - Aviation Parts Inc.