Aluminum is good, but iron can be better. ... How to Pick Budget Friendly Cylinder Heads for your 360 LA and Magnum Mopar Build. HOT ROD Staff Writer Nov 17, 2017. See All 17 Photos.

Read on as we review the all new 360 X cast iron cylinder heads from Racing Head ... big-port aluminum cylinder heads, ... The MA-X versions are designed for use with Magnum intake ...

A 360-cube Dodge 5.9L Magnum makes almost 450 horsepower with bolt-on ... we went with a set of Comp 1.6:1-ratio aluminum roller rockers. ... Magnum heads can be retrofitted to an LA-series ...