I don't think so. The definition of what is or isn't computational (i.e. algorithmic) is whether it can or can not be done with a Turing machine. The Church-Turing Thesis is that Turing machines are formal versions of algorithms. No computational procedure is an algorithm unless it can be presented as a Turing machine. Church's work shows that any computable (i.e. algorithmic) function can be transformed into an expression in the lambda-calculus. Church's work is equivalent to Turing's description of a LCM. What non-algorithmic function did you have in mind?
John Thornton