smalll block/ big block?

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Nov 28, 2004 | 06:26 PM

2000 green hornet

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Burning Brakes

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From: meraux louisiana

smalll block/ big block?

What is the difference between a small block and a big block motor? Is it something more than the size of the displacement of the combustion chambers? Does a small block or a big block have some type of advantage in the amount of power they make? Andy

Nov 28, 2004 | 06:59 PM

hubes

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From: Nova Scotia

the big block is basically a big small block, it can have a much larger displacement and can therefore make a lot more power, they also weigh more. the small block has a 4.4 inch bore spacing, whereas a big block has a 4.84 inch bore spacing. also the old small blocks had a deck height of 9.025 inches, and the big blocks have either 9.8 or 10.2. the new gen 3 and gen 4 small blocks have a 9.24 inch deck height. hope this helps

Nov 28, 2004 | 08:17 PM

AU N EGL

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From: Raleigh / Rolesville NC

Arn't most of the new Chevy LSx small blocks aluminum vs the big block is cast iron? Big weight difference.

Nov 28, 2004 | 09:36 PM

hubes

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From: Nova Scotia

you can get aluminum big blocks, but theyre expensive, oh, and btw, it would be awful hard to put a big block in a C6 if thats what your thinking

Nov 28, 2004 | 10:46 PM

jschindler

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From: Houston, TX

Quote:

the big block is basically a big small block

So what would be a big, big block?

Yeah, I guess a 540 or 572. Maybe something from Sterling!

Sorry, I just had to bust your ***** over that one!

Nov 28, 2004 | 10:50 PM

Mr. Lucky

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From: Newark, DE

St. Jude Donor '06

Quote:

Originally Posted by hubes

it would be awful hard to put a big block in a C6 if thats what your thinking

Already been done:
http://forums.corvetteforum.com/showthread.php?t=923437

Nov 29, 2004 | 10:08 AM

Mr Mojo

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Quote:

Originally Posted by hubes

you can get aluminum big blocks, but theyre expensive, oh, and btw, it would be awful hard to put a big block in a C6 if thats what your thinking

Quote:

Originally Posted by BW1

Already been done:
http://forums.corvetteforum.com/showthread.php?t=923437

If I'm not mistaken, the 427 Andy refers to is still a small block.

Also World Products has a 454 small block.

Nov 29, 2004 | 10:33 AM

clem zahrobsky

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From: delmont pa

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Quote:

Originally Posted by 2000 green hornet

the big difference is the external diamentions because even the 7.0 liter gen III engine is considered a small block because the external diamentions are the same as the 5.7 liter use in the C-5 corvettes