solid lifters i think he means.
best gain i had with 3 different heads, 2 different sets of cams and adjusted ignition timing, dizzy mods was.
modded dizzy, full advance, stock cams with inlet cam advanced, lightly skimmed and fully gas flowed head, janspeed manifold and stock everything else.... that got me 96.5bhp at the hubs. got a dyno on the old old old site..lol:laugh:
stock rpm is 6400, but they have been known to run 10,000 in rally cars and upto 11,000 in japan... cg10 though i think.