349 CI on the cheap

Positive deck pistons are of no issue if you have the clearance. Some 273 and 340's are positive deck motors. If it was to be a problem you can run a thicker head gasket, say a .060 gasket and now it is of no issue. Sure the rings will be farther up in the bores but that isn't an issue either being it isn't much higher and the chamfer in the bores is quite small.

Your 307 piston thing is interesting though.


Chuck