Dear S-Box;
The fact that the block is a 2 bolt or a 4 bolt has nothing to do with how much boost it can handle. What does matter is what type of rotating assembly it has, if any. With higher boost pressures, a forged crank, rods and pistons are pretty much a requirement.
Also, the upper end of the horsepower output for a SBC is about 1.5 HP per CID. This if course is with a Root blower on it. You can put an NOS kit on it as well and get another 100-200 ponies out of it, if you are willing to wring the neck of that beast.
A 454 CID SBC can get up to 675 HP. Anything more than this and you will need to be pricing aluminum blocks. Of course, in order for that badboy to be able to make that 675HP, you will need to drop a BUNDLE of $$$ into it first.
Once a SBC starts to produce more than 475HP, things start getting expensive quickly. At that stage in the game, it becomes cheaper to build a BBC and leave the SBCs to the kids to play around with. A BBC can produce about 1.2 HP per CID, however you also have a lot more of those cubic inches to play around with too. Also, a stock BBC block can safely 1,200 to 1,500 HP all day long.
I've seen the dollar figures for many SBCs that, while they looked and sounded impressive, cost far more than a like BBC for the same HP output. For example, Edelbrock is building blown SBC engines as drop-in replacements that are producing 507 HP on the dyno. The price tag on these engines is around 11,000$ and some change.
On the other hand, for 11K you can build a normally aspirated BBC for less money and with a much greater HP output. Around 675 HP, to be exact. At this point it no longer is advantageous to use a SBC. Again, an Edelbrock BBC 555 CID engine that is normally aspirated with a carburetor has a max HP output of 677 HP and it costs 12,800$.
I am sure there will be people who are going to tell you that they can build a 1000+HP SBC and that there are people who do it all of the time, blah, blah, blah. Unfortunately, unless you are going to be using nitrous, it's pretty much impossible for a 350C CID SBC to produce 2.85 HP per CID. Also, by using nitrous with a high performance engine (read that as *high dollar* engine) you will be taking a huge gamble that everything is going to stay together.
Your friend;
LAMAR
Bawhahaha! :haha: Holy hell! I hope you are continuing this as a joke, because the more you say the less anyone can belive! :haha: