90MM M3 Gun Information Page.
The M3 90MM gun was not mounted on any Shermans, save for the pair of test tanks when they mounted a T26 turret on an M4. These, of course, did not see production. It was used on a Sherman variant, the M36 90 GMC. This gun made the M36 a very sought after weapon, and a deadly one against any German armor it found.
M3 90mm Spec Sheet