Finally looking into a cam to finish up my 98’ 5.9 magnum I’ve been putting together. Moved away from doing the full swap with injectors and 45re to just swapping the engine; found out I have a baby on the way. Just want the engine off my stand at this point and as much money left in my wallet as possible. Was emailing with Dave over at, Hughes Engines and he informed me, Magnum blocks only have about 8.2:1 compression...is that really the case? I was expecting a little closer to 9.1:1, is the compression really that low on Magnum blocks?