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Crews and worthy rigs Around the country

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Probably a dumb question, but what is the criteria for calling something a "big block" vs. a "small block"? I thought it was displacement, and I remember that Chevy made a 400 small block in the K5... so is this 366 really a big block? I guess all that really matters is the displacement anyhow.
 
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Big block
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Cubic inches have no bearing of physical size.
 
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So the size of the block casting, does it have to be a certain size (weight / volume) to be count as "big"?
 
So the size of the block casting, does it have to be a certain size (weight / volume) to be count as "big"?
Nope. It simpler that that. Look at that pictures. See how much physically Bigger the valve covers are? The whole engine is scaled bigger.


It it was weight, all that could be influenced by aluminum cylinder heads, aluminum intake manifold, etc.
 
when you pop the hood after seeing sbc engines and find a bbc under the hood you will get a little chubby down there by its size . :rotfl:

yep its the family of the engine . kind of like a sbc = kids and bbc = parents .

the 366 was just for med duty and industrial applications . and the 400 sbc was a small block . but gm did a 396 / 402 bbc engine sizes .

here is a 366 bbc waiting to go in my gmc 7000 dump truck . swapping to factory tin covers . and edelbrock carb over the crazy funky holley unit gm used . the factory square bore intake just needs a small 4 port spacer to clear the butterfly blades . and gm recessed the dist hole to use std height distributors on these tall deck 366 and 427 engines .

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It depends on how the manufacturer named their wngines as well. The 348 and 409 were W blocks, Pontiac didn’t have a name for different block families. It is mostly a Chevy and Ford naming convention.
 
I always thought Mopar had big and small blocks? Our cuda was a big block 383. They had big block 440 too. Then there was the small block 318, 340, and 360. Am I remembering that right?
 
I always thought Mopar had big and small blocks? Our cuda was a big block 383. They had big block 440 too. Then there was the small block 318, 340, and 360. Am I remembering that right?
Yeah, then Mopar had tall deck stuff to make it more confusing. Then you add in the Buick/Pontiac/olds stuff that were cubic inch bigger but not physically. It can be confusing to those just learning all the engine stuff.
 
take around 5k-6k off if he removed all the extra gay led lighting options he did . and the color just is not doing it for me also .
 

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