January-March I had an O-235 engine overhauled at Zephyr Engines, in Zephyrhills, FL. I happened to be in the right place at the right time and was loaned a dummy IO-360 engine which they had stored in a back room. (Seems they used it in recruiting for a local technical training institute.) The dummy is the IO-360-C1E6, where I have an A3B6D. Both are wide deck / angle valve engines, and the dummy is an appropriate tool for the build. Based on an online version of the Lycoming engine codes (http://www.meyette.us/LycomingEngineNumbers.htm) both have
- Bendix fuel injection, tuned induction
- a prop governor on the left side of the crankcase,
- the Bendix D4LN-3000 impulse coupling dual magneto,
- counter-weighted crankshafts

Note that I will be moving over to electronic injection and electronic ignition, so I avoid the single point failure mode of the one magneto shaft.
A big difference is that the dummy engine has a rear-mounted air intake. It's a feature I would like to have, since it means ram air when mounted on a canard. Converting my enigne to rear air intake is something to look into.