double eagle 50 bore. 1.772inches stroke 1.260inches titan 57 bore 1.850inches stroke1.299inches. You can make it work yes because the roughly .040 difference can easily be made up or taken up, however this also affects performance because of timing and port heights. bottom line swap crank clusters to make em run as originally intended. the de50 and titan 50 actually have their dimensions listed slightly different as stoke respectively is listed as 1.260 and 1.259 but as measured the de50s stroke has been rounded up they are the same have many of both.