The Blastolene Indy Special has a loud 1790 cu. in. V-12 Tankmotor with an Allison Transmission.
Jay Leno has a Blastolene Special that started with an M47 Patton Tank V12 engine – (1950-1955) 1800 cu. inches all aluminum – 1000 h.p. – 1500 ft. lbs. of torque.
Tank Engines tend to run a little loud until you have Gail Banks work on them.