I got a 440 out of a 1970 Chrysler for my Swinger. It was a 375 hp engine from the factory. Before putting it in my Swinger it got a little head work, a Mopar performance cam, Holley Terminator ignition, Holley single plane intake with a 780 cfm Holley carb.
With the beefed up 727 trans and 3:55...