Supposedly any year 351 block can live at 700, and I've seen claims of 800+.
Your only other Windsor-based option for those power levels would be going aftermarket (Dart or Boss).
I'm curious- what are your plans for the car, and why do you seem to think that an LS is your only other option?
The LS Blocks & Cranks can easily handle that kind of power. The cranks can handle upwards of 1000+ HP & the Iron Blocks are pretty stong as well without having to reinforce the block with girdles or aftermarket bolts or studs. And they make Easy & Cheap Power compared to our Ford Blocks, but price isn't what's holding me back. It's Stock Block & Crank Strength at those Power Levels.
My plans for the car are Street/Mostly Strip use, but my ultimate goal which is going to be years down the road would be to get it to crack 1000+ HP, but as I'm typing this now I guess my only option is to go aftermarket for what I want.
The words "iron block" and "LS" don't go together. You're thinking LT. The LS engines are aluminum blocks.
But those aren't factory as OP was stating. Those are aftermarket "Cast Iron LS series" blocks. You can get them through Summit.
http://www.summitracing.com/parts/SUM-150105/
"The LS engine design has incredible potential, but once you start bolting on big superchargers, an aluminum block just can't contain all that power. These Summit iron LS blocks have all the same potential, but the cast iron construction is capable of withstanding high horsepower applications..."
wikipedia said:The engine blocks were cast in aluminum for car applications, and iron for most truck applications (notable exceptions include the Chevrolet TrailBlazer SS, Chevrolet SSR and a limited run of Chevrolet/GMC Extended Cab Standard Box Z71 Trucks).
gmhightechperformance.com said:The General Motors engine family commonly called the LS series debuted in the then-new1997 model year C5 Corvette as the all aluminum LS1 V8. General Motors called it the Gen III small-block V8 and a year later (the 1998 model year), the LS1 replaced the LT1 small-block in Camaros and Firebirds, which was followed by the iron-block version of the Gen III V8 appearing in the full size trucks and SUVs.
I would like to know which Ford Stock Block & Crank can handle 800-1000HP regularly
What would be nice is to somehow get your hands on an '03-'04 Cobra block. IIRC they're cast iron and not aluminum. They're ridiculously strong.
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