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

64physhy said
I really think the bottom line of how much it can handle is really in the prep of the block and parts and how it's set up. Not having the rotating assembly balanced good enough will cause stress, high compression adds stress, etc. Then there's un-known's and things beyond our control such as weak spots in the castings of the block or rods. I think there are a lot of variables involved. There are going to be those who have pushed 800 HP out of a well built and regularly refreshed build, and then there will be those who break at 450HP.

For many of us, if we had a stock block engine grenade with 500HP, then we'd probably not try to push it that far again, and be under the impression that a stock block couldn't handle it (unless we found the source of failure to be something else).

I just think there are too many variables, and there's going to be all kinds of opinions, probably based on way more experience than I have, that will range from one end of the spectrum to the other.

I agree that a well prepped block will for sure last alot longer than one that was just slapped together.

What I am trying to get the answer to is "where does the block actually fail, and at what power level" So far there is no evidence here in this thread that would answer this question. Most Block Failures are from the "Parts" finding their weak spots which have nothing to do with the block. You scatter a piston, you will take out a cylinder wall, bend the Rod and probably the crank etc, etc which I believe we all can agree on. I also believe that a "Bad" Tune will most definately take out the weak link which in most cases is not the Blocks Fault in any way, Period.

Lets see if these Heavy Hitting SBM guys chime in with their first hand experience on all the "CRAP" they talk on this subject. I am sick of them talking it with nothing to back up their play..... So far I am not convinced at all and will just about take the rest of their talk with a grain of salt from here on out!!