A folding unit for producing packages of pourable food products from sealed packs having a longitudinal first axis and comprising at least one end tab to be folded and projecting in the direction of longitudinal first axis; unit comprises a conveying member fed with a plurality of packs and which feeds the pack along a forming path, and folding device interacting with each pack along forming path to fold first end tab pack; folding device comprises a plurality of surfaces carried by conveying member and cooperating with a central zone of end tab of a pack, and movable between a first position and a second position with respect to pack with which it cooperates; folding device comprises a plurality of cams carried by conveying member and each cooperating, with a surface for moving it between first and second positions.