Help me diagnose why my head gasket blew

Did you have the crankshaft ground, it looks like the stroke is off.

Brand new stroker crank.

what about just having the rods checked out, and resized if needed?

Don't have the time right now I need to get it back on the road. Once I get my shifter mechanism back from Passion, I can get my Duster on the road, then I can park this one and work on the engine.