ULHer, I would suggest you have a cone motor cam reground to knuck spec. Someone once told me they used a Leinwebber J-3? cam in a similar motor and it ran ok, but I never compared to a stock knuck cam. The shovel cylinders will not bolt up to the knuck heads. You can used untimed crankcase vacuum to return top oil but it helps to have a pcv type one way valve in the line. You can use a fitting in the timing plug hole as S&S did with their prototype sidewinder motors or tap in above the crancase oil return trough at the top of the rear motormount. A board member, wawilhelmo, or something like that, has built a shovel bottom with knuck top bike. You may want to look him up in the member list and see if he will help you out.
1. Thanks for the input amklyde, I know you love the genny shovel.
2. I have been told to drain top oil back to port that would normally suck oil out of primary if u didn't have a sealed primary.
3. The heads are coverted to accept pan cyls. something done to many in the 60s. because lack of knuck cyls. I'm thinking
of using shovel cyls, since they are about the same as pans.
4. The cam I end up with and will be the most modified /custom part would be a genny shovel with lob profiles like an
Andrew K syle, used in the knuck.
Thanks all for your help, this will be a learning experience for sure. Have already learned a lot about how the return oil
and haven't turned a wrench yet:)