How Many Knuckleheads still kicking

[fxcw64]

You guys are awesome !!! Thanks

[1950Panhead]

Hey guys question
If a Knucklehead has a UL # then it is a UL bottom(flathead) end with El or FL heads/jugs correct. True Knucks were only EL or FL ?

As Robbie says, knucklehead and UL and engines are completely different.
A few four cam knuckles have been built.

[fxcw64]

I can see now how wrong my original assumption was with the UL and EL hybrid --So for someone like me that sounds like alot of machine work putting heads on a bottom end that uses 4 cams instead of the single cam set up it came with!!!
I really can't wrap my head around that .....The angles seem all wrong WOW
Unless you just machine the covers to go over the ..........nope thats not it ------so do you just machine the UL heads to accept Knucklehead covers ???

Rubberband brain stretched to limits LOL -thats a headscratcher you got there 1950Panhead

[Kozy]

I can see now how wrong my original assumption was with the UL and EL hybrid --So for someone like me that sounds like alot of machine work putting heads on a bottom end that uses 4 cams instead of the single cam set up it came with!!!
I really can't wrap my head around that .....The angles seem all wrong WOW
Unless you just machine the covers to go over the ..........nope thats not it ------so do you just machine the UL heads to accept Knucklehead covers ???

Rubberband brain stretched to limits LOL -thats a headscratcher you got there 1950Panhead

Look here for some insight.t http://victorylibrary.com/45MAG.htm