Magnum Heads

Alex, The heads are the same from the 5.2 and the 5.9. The problem with the heads is that they are very prone to cracking between the valves, as there isn't enough material casted in them between the seats. This was a way for the manufactures to make lighter weight parts and keep the industry going. The heads come with 1.92 /1.62 valves. If you can get a good set that isn't cracked they will support 400 hp but not much more.


BJR Racing