Have one of the guys in my club with a '49 F-1 with a tired six .. Is bored at .40 over now. I am not sure .60 is too much. Anyone familar with these....... Thanks Dude")
HI; See if you can find a 49-51 M series six block and head. Direct swap with a bigger bore, 254 in. or so.
They were in F-6 and larger trucks. California Bill's
ford hop up book has a chapter on them. Later Newc