hemi advantage?

hemis were designed as race engines, with a street version created to keep it legal for racing.

top fuel cars still after 40 years use a version of the same engine. I believe the common one is 7:1 compression with special venolia anodized pistons, 496 cubic inch, a huge blower and runs on 90% nitromethane. their estimated horsepower is in the area of 8000hp
the bore they use is slightly smaller than the original 426 hemi but they use a 4.500 stroke

you wont see them switching to a new gen hemi anytime soon, or turbo, or wedge or chevy

just to put it in perspective, those cars the fuel pumps can pump 93 gallons per minute

most of us get HP fuel pumps that pump around 120 or 150 gallons per hour