Strong short block
Start with a race block.
Don't waste money on a Pcar block if you think you can make that much power.
Should have read closer. If you are stuck with a Pcar block, use hard block. Keep the stroke UNDER 3.600. Use the longest rod you can get. Keep RPM down below 7k. Open the clearances up to .0028-.0003 on the rods and .0032-.0035 on the mains. Full groove mains.
Work your beads and prayer bones. Stock blocks are weak.