Convert Lycoming IO-360-A3B6D to IO-360-A3B6?

[Non-Mooneyguy]

  On 6/27/2024 at 2:26 AM, Aerodon said:

And another thought, it is probably not too hard to find a new bottom inductions system (sump and risers?) as this is a fairly common engine (Cherokee 6 and Saratoga?).  The front induction system is rare (Swearingin SX300 and Found Bushhawk?).  But it looks like the Bushwhack engine can be a 'parts donor, get everything overhauled and ready to go, and at the last minute overhaul and bolt the different parts from your engine?

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Wow Aerodon-- very helpful, and your knowledge / access to information is great.  Clarifying: engine needed: L1C5,  Donor: K1G5. 

...and since you identified the only 2 platforms Lycoming lists it for, you prob appreciate how rare the L1C5 is.  My original question was about roller tappets, but after stumbling on yall's discussion here, I further researched and concluded that roller tappets don't impact compatibility, and this donor engine, while made in 1980, was overhauled in 2013, so I assume got its "E" designation then.  Roller tappets aside ,that leaves me with the question of whether a sump and/or the other L1C5-specific components are going to be in the overhauler's warehouse.   If not, that leaves the possibility of your concept of "get everything overhauled (on the K-donor) and ready to go, and at the last minute overhaul and bolt the different parts from my (L) engine."  I think this is as far as I'll get, because there's no one left to ask about the sump (etc.) availability that I know of. 

Thanks a lot for your thoughtful response.  And while I feel guilty for crashing yall's forum, I promise I'm a net "giver" in the rest of the really specific forums I'm in, start new threads, etc., along with my other middle aged / aging compadres there.