Hey, I’m back…got busy with a Helio re-build and I’m in the process of doing paperwork regarding the installation of a Lycoming IGSO-540-B1C (380 HP)…This installation should send the gal into orbit!!!
Heck yeah!!..bring it on. We have do all the crazy FAA paperwork, then the installation. The existing engine mounts can handle the Lyc and since it is “supercharged” I should get to 31,000 feet no problem.
These engines were used in Aero Commanders and Queen Airs in the 60’s most notably the 680FP and Queen Air 80/88.
Lycoming was modest with the TBO at 1200 hours and I’m pushing it up to 1700 because with proper technique they will do all of that