Sprint car motors?

doogievlg said

I know a lot of sprint cars run small block mopars but I can't figure out how they are getting 800 or 900 hp out of a small block. I will be the first to admit that I do not know a ton about the small block even after rebuilding a few and being on here for 8 years or whatever it is now. But those numbers just seem insane to me.

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It isn't too hard to do if the parts are available. Engine design is mostly just math. You pick a CSA to give you the torque peak where you need it and then make sure everything else can support that. If you use a large CSA and move the torque peak up to 8000 rpm then you're going to make a lot of power but you'll need super high quality parts everywhere in the engine to stay together at that speed.