I've noticed many of you asking same questions about the КV-4 КТТS so I will resume all information.
The КV-4 КТТS an heavy tank destroyer, equipped with a experimental107mm gun M-75 (ZiS-24), built on the KV-4 tank hull project and existed only in drawingswas an tier 7 initially when we got first sight of it but since then the tank got modified and is now viable to be tier 8.
These are its current statistics which by the way, got changed since the last update I posted, pretty much all nerfs:
Tier: 8 TD
Engine: 1200 hp
Weight: 99 725
Power-to-weight: 12,0 hp/t
Maximum speed: 35/10 km/h
Hull traverse: 26 deg/s
Gun traverse: 26,25
Turret traverse: 28
Terrain resistance: 1.4/1.5/2.8
Radio range: 360
Hull armor: 200 / 125 / 125
Superstructure armor: 250 / 125 / 125
Gun: 107 mm 3NC-24 (previous "107mm M-75", same gun)
Don't worry about the 0 mm bit behind gun mantlet, it will be fixed.
The base of the gun mantlet which is barely visible here has thick 230 mm armor.