1971 ( 340 ) Block & Crank obtained !

And I bet a lot better than a 3 stone brake cylinder hone, at least the ones with the stones on center pivots. I've observed that a brake cylinder hone's stones will want to tip a bit at an angle as they pop out past the edges of any bore, and that will hone the top and bottom of the bores a tad more than the center. OK for a brake cylinder.... not for a lifter bore; that needs to be kept straight and true.

It might be nice to find an old style hone with the stones fixed in a cylinder, if they are made that small. I hope some of the experienced machinists chime in here.


You have to over stroke any hole you are honing. If you don't, they get wide in the middle and tight at the top and bottom.

For what the OP is doing, he needs the dingle berry style brush rather than a rigid hone. He just needs to make sure the lifters can rotate in the bore.

Hopefully the OP is tubing both blocks. There is no reason not to do it.