Anemos Major wrote:DnalweN acilbupeR wrote:I don't understand where you're going with this.. of course you don't just remove the 100mm and slap the 125mm in just like that. By "just fine" I meant that they can withstand the recoil of a HV 125mm gun, they can retain decent ammo capacity, and so on.
You'd have to replace the turret, the powerplant, the autoloader, heavily modify the hull, install a new FCS and appropriate electronics (and a fair bit more) - by the point at which you do that, you effectively have a new tank. You can convert a T-55 into what is essentially a cramped T-72, fair does, but if you look at the price tag of a full structural overhaul it'd probably cost as much to just buy a T-72 and bring it up to the same standards.
Why exactly do you think you'd need a different powerplant? The T-55 would benefit from a different turret anyways. Replace the carrousel with a bustle autoloader.