Why?
rofl. tell the guys running twin turbo 426 hemis that. 2000+ hp\
that being said... the new gen hemis are great for street cars.
for racing purposes (over on moparts.org you can find lots of info) they are very high maintenance...
the valve train needs constant inspection and adjusting. if you race them and don't take care of the top end, and something breaks, guess what? you have stuff dropping into the cylinders and then you will really have a problem. they are doable for racing but you want 2 things in a race engine: power and durability
so you can make one of them durable with proper valve train maintenance. it's expensive though.
