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Funny Pic Thread VII - No swearing. No sex. No complaining. (READ FIRST POST)
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Danoff
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I do something a little like that except it goes more like this:
Yay 2 engines instead of 3. Aircraft are built to be able to fly in the event of a single engine failure. That means that the amount of thrust from N-1 engines must be sufficient for flight (including, I believe, enough thrust to accomplish takeoff after a given flight-committed velocity is achieved). In a two-engine aircraft, N-1=1, so each engine must produce sufficient thrust for flight. In a three-engine aircraft N-1=2, so each engine must produce half of the sufficient thrust for flight. That means that in a 3 engine aircraft you get 1.5 times the amount of thrust nominally that you need for flight, but in a 2 engine aircraft you get 2 times the amount.
Two engines = more thrust. More thrust = shorter takeoff and landing distance = greater safety.
MedigoFlame
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Car ownership in a nutshell. 
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The guy on the right looks like someone I work with.
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The image in question won't reveal itself to me due to my phone network being controlled by Big Brother but I'm going to go ahead and say "yeah, you're right. That's me." Although I've no idea if it is or isn't. But I could be. Or could not be. I don't know. But it might be me.
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Dan
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I posted that...
MedigoFlame
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Always hated that small piece of snow during the winter...
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You can have a 350 big block and a 427 small block, the displacement doesn't matter for block designation.
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- Dooblewasur
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It's not a set thing, different manufactures have different standards.
It's also due to the actual size of the block.
Example: Old technology can't keep the engine cool enough, so it needs a bigger block for cylinder spacing, with new technology, they can space the cylinders closer together, but the displacement might be larger.
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Schrödinger's Block?
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Small block and big block designations were based on the physical size of the engine, not displacement.
Only GM called them big blocks and small blocks. Ford classified them as engine families and Mopar and AMC did as well. For example, a big block Chevy would be a 393 or 454, while a big block Ford like a 460 is part of the 385 engine series, the 385 being the 3.85" stroke of each engine in that series, such as the 429 etc.
This. Ford's 400 engine is a tall deck 351 Cleveland, which is a classified as a small block and is tiny engine compared to a big block Chevy like the 454. Yet the engine displacement is only about .8L apart. The 351C looks like an ant next to a big block. You should see what a 302 looks like next to one.
Yes it makes sense, because it's based on the physical size of the engine, not displacement. You seem to think because an engine has a high displacement, it automatically means it's a big block. Not true. A perfect example of this is the old Ford 5.0 (aka 302) vs the new Coyote 5.0. Same displacement, but the Coyote is a monstrous engine in the size compartment when you compare the two. That said, with the new engines, big block and small block has pretty much disappeared since most are small blocks now anyways. Don't ask me why, but no one calls a Coyote a big block anymore since the designations died out.
At the same time, Ford also had a 352 ci big block, part of the FE family of engines; it's a de-stroked version (early version) of the 390 engine and then later on the 428 and it's Cobra Jet versions. That engine is physically large, considered a big block while the 351C and 351W displace the same, as well the 350 Chevy and 340/360 Mopar and each one of those is considered a small block because of their size.
Not entirely true. Nearly all old Ford OHV aka pushrods are called "thin-wall" castings, hence why Windsor engines can only be bored out roughly .030"-.060" block year depending (1969-1974 are stronger than 1975-2001) before running into overheating issues because there isn't enough meat between the cylinders and it's too close to the water jackets and coolant passages. I see your point but that isn't exactly true. With the thin-wall cast engines, they've never run into overheating issues because of bore spacing.
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