I would bet because of all the chrome parts they have available as well that these were intended at one point for for either some custom karts or bikes that never got completed and they ended up in some storage facility or something to that effect.
they are ball bearing supported cranks, if you want to get the "most" out of a small block tec, well I would say this is what you want as the engines they have are the biggest you can get in that blocks size with ball bearing shaft, and all brand new :thumbsup: Are they electronic or point ignition engines though :shrug:
I'm building a mid 70's HS50 right now using a BB crank and sidecover from a rupp (which were actually updated parts from a later longblock replacement-still the 3" longcrank though :thumbsup
, also using the early shroud and AL flywheel from the early '70's. I don't have any mid-late 70's bikes so the square shroud does not work for me on anything.
I bought some chrome parts from the company thats selling the engines, steal of a deal!!! the chrome is nice for the price :thumbsup: