Dabluz 0 Report post Posted August 2, 2011 I've got an old Chrysler 9.9 h.p. and the prop seems to be too small. My Evinrude 7.5 and my Mercury 7.5 both have 3 bladed props of the same size but the Chrysler only has a 2 bladed prop and the blades are smaller than those on the Evinrude or Mercury. Is this normal? I'm baffled. Share this post Link to post Share on other sites