Pulley Diameters

Your post is very interesting , I've got some heat problem i n trafic too . With a moroso 5'' inch on the crank and a 6 7\8 on the WP I've got a ratio of ,727 not very good at idle . I've found a 7'' crank pully but it seem to be very difficult to found a 5 5\8 WP pulley , for the part no 3418227 it's 1 7\8 deep but my 6 7\8 WP pulley is 2 7\8 deep, does a WP pulley with a 2 7\8 deep in the 5 inch range exist ??