The new Hemi has a new Hemi, but is it any better than the old new Hemi? That's right, we're battling two iterations of the 5.7 III Hemi, the '03-08 vs. the '09-current, and we're learning a TON in the process. With an eye toward engine-swap simplicity, we've stuffed them both with the biggest cams they can handle and managed fuel and spark in the most affordable way possible for each. The only thing left to do is decide how you want to spend your hard-earned Hemi-swapping dollars. Let us show you the way on this episode of Engine Masters presented by AMSOIL.