Let's list in no perticular order the things that need to go into such a stock block buld to hold up to 800 hp.
Let me first say that more boost from a blower and less rpm is a great start!
Splayed steel main caps.
3" mains.
Lifter valley reinforcement.
Aluminum Rods.
8 counter weight Crank.
3/4 fill block.
Deburring every possible sharp edge that could lead to a crack.
Main girdle to tie the main caps together on the 1,2,3 and 4 main cap center bolts.
Minimum stroke for needs, this ties into making power with boost!
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