[Psalm 73]

"...the t53 L11 Lycoming turbine,..."

I remember working as a powerplant mechanic for Lycoming back in 1980 - still pulling T-53s out of cans back from Vietnam for overhaul. There were stacks of 'em.

[going hot]

We canned the turbines when they reached 1100 hrs of flight time.

Later, the Cobras sported the L 13 with additional power same as the Hotel huey when it came out, iirc 1400 shaft hp.