Power limits for LA small blocks?

slowdown said

I have a teen stroker, I don't have any idea the hp. But I've been curious to your question as well. I've always wondered why import 4cyl have no problem making huge power with turbos. But small block mopars have some power level were they aren't durable enough to handle? Fella I work with just had his import dynod at over 700hp an runs it at bandimere with all 4 tires spinning. He's still working on that part.

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its because the blocks of those import 4 cylinders are actually designed for boosted applications. So they are made with a higher quality casting and with strength for the added boost in mind. Also, you're comparing blocks made 30-40 years ago to blocks made since the mid 90s mostly. Machining and technology have come a long way. Tolerances are tighter, materials are better etc. Ever taken apart a turbo'd import motor? The two that I have, had cross bolt mains and main girdles. and one, which was a twin turbo motor had main girdle with STUDS. There is still limits to those blocks as well, just higher.