**600hp sbm block limit? Or is it bs!!**

I ran a 360 block for 4 years street and strip, stock crank, H Beam rods,studded main caps, and KB pistons. this engine never mist a beat. Made 407 hp and 401 tq to the rear tires. My intentions were to pull it apart and make it stronger for Nos. Well I put the nos on first,180 shot( mistake ) it made 545 hp and 569 tq to the rear tires. I got 4 passes out of it and it cratered.
Now I blaim the KB pistons, not really sure it made such a mess its hard to say.After reserching it I decided to go with the R3 eng just to be safe.

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They are advertised to handle that much shot, I believe the tune killed it.
I 'personally' would shy away from a stock cast crank @over 500hp...
but right on for making the power and living 4 passes.