<P> Chrysler developed their first experimental hemi engine for the Republic P - 47 Thunderbolt fighter aircraft . The XIV - 2220 engine was an inverted V16 rated at 2,500 hp (1,860 kW). The P - 47 was already in production with a Pratt & Whitney radial engine when the XIV - 2220 flew successfully in trials in 1945 as a possible upgrade, but the war was winding down and it did not go into production . However, the exercise gave Chrysler engineers valuable research and development experience with two - valve hemi combustion chamber dynamics and parameters . </P> <P> In addition to the aircraft engine, Chrysler and Continental worked together to develop the air - cooled AV - 1790 - 5B V12 Hemi engine used in the M47 Patton tank . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (May 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (May 2011) (Learn how and when to remove this template message) </Td> </Tr>

What size motor is a dodge 5.7 hemi