i did build an entire bike around an old Leineweber custom ground cam. a brother had found it buried in the back of a defunct speed shop..... it had the original hand written cam card in the aging box, twas from 1975....we even called Jim Leineweber for his advise, he STILL answers the phone and he's in his 80's now....nitro legend....and he told us that he made the cam for Jimmy Simpson of Tramontin Harley fame. he WAS a cult legend too.....i own a set of his hand built shovelheads......gonna build a motor with those one day.
anyway....took a long time and lots of wrench spinnin to get the entire recipe dialed in.....porting/welding and re-re-reporting the heads to get it "right"..advancing/retarding cam timing...few different valve size combos, etc.............eventually we got it.......and it sure was a purpose built engine.........yea, i've done some "not the smartest" things......now i know better, LOL.
guess i derailed his thread, sorry.