The M18 has like 6 HP/tonne more which is an absolutely massive difference worthy of at least one BR step above, and then you factor in the great reverse speed as well.
Objectively looking, it is absolutely a competitor to the VK3002, having better hull armor and vastly worse turret armor with some other differences here and there.
Thanks for the info. Given those percentages, we can now calculate the Yugo Hellcat’s power-to-weight ratio, which in turn allows us to estimate its speed and acceleration characteristics.
The Results:
Metric
Original Hellcat
Yugo Hellcat (145 hp)
Engine Power
400 hp
145 hp
Vehicle Weight
18.8 tons
18.94 tons
Power-to-Weight Ratio
21.3 hp/ton
7.66 hp/ton
Top Speed (on road)
~55–60 mph
~20–28 mph (estimated)
Estimated Acceleration (Road Conditions)
Speed
M18 Hellcat (original)
Yugo Hellcat (145 hp)
0–20 mph
~8 sec
~22 sec
0–30 mph
~13 sec
~36 sec
0–40 mph
~20 sec
~55 sec
Max Speed
~55–60 mph
~25–28 mph
Off-Road Summary Yugo Hellcat
Metric
Value
Effective Power (off-road)
~101.5 hp
Power-to-weight (off-road)
~5.36 hp/ton
Acceleration (0–20 mph)
~32 seconds
Max Speed (off-road)
~18–22 mph
While this configuration is plausible with the static, low-mobility characteristics of Yugo-style warfare, it’s essential to confirm whether this engine is indeed the one used in the tank.
The grille on the converted Hellcat has a FAP 13 badge. As far as I know only FAP 1313 (130 hp) had the FAP 13 badge on the front grille. FAP 1314 /1414 (145 hp) had theirs on the cab door under the window. FAP 1314 — Википедија
Good news! I’ve found another picture of converted M18. It seems to be able to rotate the turret 360 degrees. Additionally the badge on the hood is more clearly visible and it seems to be FAP 13 SK - dump truck. Does that help with further identification of the engine?