|Engine Power (hp)||500|
|Speed Limit (km/h)||40|
|Standard Shell Penetration (mm)||154 - 256|
|Standard Shell Damage||169 - 281|
|Rate of Fire (rounds/min)||8.3|
To increase firepower, a new long-barrelled 90-mm gun was mounted on the T26E1 in January 1945. The prototype was designated the T26E4. Development was discontinued in January 1947 due to problems with the gun and the loading mechanism. A total of 25 vehicles had been built by that time, but never entered service.