73-76 spindles

The rotors do not interchange between the '70-72 E/B body and the 73-76 A body. Rotors for the 70-72 B/E body use a smaller inner bearing and seal, and were originally 2 piece although they are now reproduced as 1 piece rotors.

If the 73-76 rotor does not fit your 73-76 spindles, something is wrong with either the rotor, spindle, bearings or seal. Or some combination of those parts.

Are you sure the inner bearing and seal with the '73+ rotor is fully installed on the spindle? Sometimes a stiff seal can hold the entire assembly off the spindle a little bit.