340 hp capabilities?

billet steel caps and dowels will eliminate cap breaking and cap walk and maintain concentricity of the bearings . to not put steel caps and dowels on a block simply for fear of the block breaking anyway makes no sense to me and a stud girdle wont do 1/10th of what the caps and dowels will . might as well run a cast crank and hypereurectic pistons too if one expects it t blow up anyway.

Also, on a high revving build, it is beneficial to true the lifter bores and install bushings with smaller holes than the huge ones that are standard in the bores.

In my experience, it is the people that buy second rate parts and don't go to the additional expense to do these things on big power builds that are the ones that have engine failures more often than those that do these extra things . I have seen countess cases where some fool wants big power but buys cheap parts to get it then asks why their engine blew up, lol.
.
I agree completely. By all means I'm not gonna skimp on parts nor machine work. I'm just trying to get an idea of the approximate hp/tq a stock production block is capable of . I would like 600 hp in a street build. But if ultimately I need a x, or r block I will look into that. I'm not counting Big block out but that would be a last resort