Lycoming Overhaul Manual 60298-4
Manual covers the O-320 & O-340
Series includes models O-340 -A1A, -A2A, -A3A, -A1B, -A2B, -A2C, -A3B, -A3C,
-B1A -B2A, -B3A -B1B, -B2B, -B2C, -B3B, -B3C, -D1A, -D2A, -D1B, -D2B,
-E1A, -E2A, -E1B, -E2B, IO-320 – B1A & -B2A O-340-A1A, -A2A, -A1B,
Cover date is 1960.
Some of the aircraft with these engines are!