Certification Pursuant to Section 1350 of Chapter 63 of Title 18
                            of the United States Code


I, Ralph C. Eucher,  President of Principal  Capital Value Fund,  Inc.,  certify
that (i) the Form N-CSR for the period ended April 30, 2003 fully  complies with
the  requirements  of Section 13(a) or 15(d) of the  Securities  Exchange Act of
1934 and (ii) the  information  contained in the Form N-CSR for the period ended
April  30,  2003  fairly  presents,  in all  material  respects,  the  financial
condition and results of operations of Principal Capital Value Fund, Inc.


Date: June 19, 2003                     /s/ Ralph C. Eucher
                                    -------------------------------
                                    Ralph C. Eucher
                                    President


        Certification Pursuant to Section 1350 of Chapter 63 of Title 18
                            of the United States Code




I, Jill R.  Brown,  Vice  President  and Chief  Financial  Officer of  Principal
Capital Value Fund,  Inc.,  certify that (i) the Form N-CSR for the period ended
April 30, 2003 fully complies with the requirements of Section 13(a) or 15(d) of
the Securities  Exchange Act of 1934 and (ii) the  information  contained in the
Form N-CSR for the period ended April 30, 2003 fairly presents,  in all material
respects, the financial condition and results of operations of Principal Capital
Value Fund, Inc.


Date: June 19, 2003                     /s/ Jill R. Brown
                                    -------------------------------
                                    Jill R. Brown
                                    Vice President and Chief Financial Officer