512 Build

That’s a good build combination. I like the 1.32 inch compression pistons, it’s better to have the stability of the full skirt with that much stroke. Are those the Chapman Racing stage VI heads? With the quick revving light no weight and the 1.54 rod ratio, airflow is everything, no such thing as too much cylinder head!
I imagine that one of the 230 blocks with a full fill (no cooling) and the BCR caps and girdle would be good for upwards of 1500 hp.