Gifted a CC100 with K341?

[Uglydog]

I was gifted a CC100 with a #1 tiller. I've no other historical data available to me on her prior life.

She seems to have been stored inside, and it's clear she hasn't run in a while....based on the layers of dust.
She turns over easy with the starter and by hand.
Missing parts include coil, condenser, points. Carb is dangling by one bolt.

I expected her to have a 10hp K241.
But when I pulled the head to inspect the cylinder I judged the bore to be significantly larger than the bore on my CC108. Very little carbon build up and head gasket seems intact. Yep, bore is 3.760. Seems that is a K341. The engine appears to be very similar in shape to the engine on my CC149.
There are no ID plates/tags on the shroud.

I'm not sure what a notched narrow frame should look like. Or for that matter what an OEM frame would look like.
I'm guessing this is a rebuild installed as an "upgrade" as the head bolts had Grade 8 marks on them.

I'd like to get her going and plan to work on her this winter in time for spring garden activities. Any suggestions on how I can confirm she is a K341 16hp on a CC100? I'd like to get some parts ordered.

Thanks,
Daryl
MN

[crazycubtrio]

It’s hard to believe that engine would fit between the frame rails. If you pull up a pic of a C C 147 you can see how the frame is notched from the factory for the 14hp flywheel and shroud to fit. If your frame isn’t notched then someone could’ve just hodgepodged different engine parts together and hoped for the best like using a k341 block and crank but leaving a 10hp flywheel and bearing plate on it. I doubt it would run anywhere near smooth if that was the case. One quick visual way of identifying a 341 block is to count the head bolt holes. It’ll have 10 while the 10-14hp will have 9. Good luck with it

[finsruskw]

Count the head bolts, there should be 10 if it is indeed a 341.