The 11 bolt has one plate, incorrectly called a "divider". The "divider was the internal plate for an 8 bolt. On a 11 bolt, the single plate closes off the chamber with the impeller and directs the flow to the sides of the block. It should have only a center hole about the size of a circle formed by the inside edges of the vanes.
One thing that may be missed is that the 11 bolt timing chain housing also has tubes in it that mate up with the outlet holes in the pump/plate combination. The mating surface of the tubes has rubber "O" rings to mate with the pump closing plate to direct flow to the block cooling jacket on each side. The tubes and the "O" rings MUST be used on an 1 bolt.
George
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"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum
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