2 . ▁Through out ▁its ▁production ▁life , ▁output ▁r anged ▁from ▁roughly ▁ 4 5 0 - 7 0 0   hp . ▁The ▁water - co o led ▁engine ▁was ▁made ▁of ▁al umin ium . ▁ ▁Dis p lacement ▁, ▁bore ▁, ▁stroke ▁ ▁left ▁cyl inder ▁group ▁and ▁ ▁right ▁cyl inder ▁group , ▁tor que ▁. ▁ ▁Vari ants ▁ ▁V - 2 : ▁Initial ▁production ▁version , ▁ 1 9 3 7 . ▁U sed ▁in ▁the ▁B T - 7 M ▁( B T - 8 ). ▁ ▁V - 2 - 3 4 : ▁V - 2 ▁with ▁re vised ▁h ull ▁mount s , ▁fuel ▁and ▁cool ing ▁connect ors ▁and ▁ref ined ▁cl utch , ▁ 1 9 3 9 . ▁U sed ▁in ▁the ▁T - 3 4 , ▁SU - 8 5 ▁and ▁SU - 1 0 0 , ▁it ▁produced ▁ 5 0 0   hp ▁( 3 7 0   k W ) ▁@ ▁ 1 8 0 0 ▁R PM . ▁ ▁V - 2 K : ▁V - 2 ▁with ▁increased ▁injection ▁pressure ▁and ▁higher ▁engine ▁speed , ▁ 1 9 3 9 . ▁U sed ▁in ▁the ▁K V - 1 ▁and ▁K V - 2 , ▁it ▁produced ▁ 6 0 0   hp . ▁ ▁V - 2 V : ▁V - 2 ▁det un ed ▁for ▁use ▁in ▁l ighter ▁vehicles , ▁ 1 9 4 0 . ▁U sed ▁in ▁the ▁Vor