Interesting-I nicknamed my SPWB "The P-47" because the overall design of the modern Challenger reminds me of the brute bulk of the WWII P-47 Thunderbolt. Turned out it had a Chrysler-inspired engine in it!Here an interesting fact. During World War II, Chrysler began testing and developing engines with hemispherical combustion chambers for aeronautical and military purposes. Chrysler worked with Continental to create the 1,792-cubic-inch AV-1790-5B V-12 in the M47 Patton tank. The monster of an engine put out 810 horsepower and 1,560 pound-feet of torque. The 1940s P-47 Republic Thunderbolt fighter plane used another example of the hemi engine. The XIV-2220 V-16 had pushrod-activated valves and a displacement of 2,200 cubic inches, and at 3,400 rpm it produced 2,500 horsepower. The engine also used 58.5-degree separation between the valves.