Here’s a somewhat detailed look at the differences and similarities between two Chrysler engine series - the ‘64-‘93ish LA small block V8, such as a 318, 340 or 360, and the freshened ‘93-‘03ish Magnum 5.2 and 5.9. If you want to put a Magnum in your Mopar muscle car or old Dodge truck, here’s what you need to know.