The LS1, LT1, etc. are all V8s. 5.7 L. I get that. Where does the 350 come in? I hear people talking about making their 350s 383s and stuff. Is this just a different way of saying they are the same size? I have no idea where to post this, and I have no idea what this all means. Someone help?

 

LT1 and older engines are 350s which is the amount of cubic inches, a 350 is = to 5.7 liters of displacement. Now when you are talking LS1/LS6 they are 5.7 liters of displacement but are only 346 cubic inches. When people use numbers like 350, 400, 454, 502 its just cubes.

 

So the liters is the volume inside all the cylinders combined. Is that basically what the cubic inches are too? 350 cubic inches of space inside the cylinders combined?

 

yes

350 cubic inches , when convereted to metric, is 5.7 Liters(rounded off), the LS1 is 346 cubic inches, same thing, it rounds to 5.7 liters in metric

 

Wow! That's cool, thanks a lot. I'm trying to pretty much understand cars in general, so where do I post topics about things like this?

Thanks a lot for the info.

BTW, what's the cubic inches for the LS2?

 

There are 61.02 cubic inches per liter (or so a wise man once told me). And the LS2 is a 6.0 liter motor, so that would put the cubes at about 365 or so. But thats just a rough estimate.

 

Its GM's progression in cubic inch size since it introduced the First Chevy V-8 in the Fifties starting with SBC 265, 283, 327 and then 350. All with the almost the same bore & stroke. The present day LS1 350 is just the latest version started by that simple 265 V-8 in 1955.

 

It would be sort of far-fetched to say the LSx family of engines is just an extension of the orginal Chevy small block family of engines. Other than the bore spacing and the fact that its made by GM, its a totally different engine.

 

You don't read or comprehend very when I said it was the latest version of SBC line.

 

Thanks for the reading/comprehension assessment

I would still argue that its not even the "latest version started by that simple 265 V-8 in 1955"... And to state it that way is misleading, reflecting on the knowledge base of the original poster. Even you had to change what you wrote, in the quote above

Have a nice day.

 

he skiped a few sizes as well, 302, 305, and 307

 

Ah, yes, and how about the 348?

 

You will note the bore & stroke are different on those motors.

 

all SBC's

262 3.671 bore x 3.100 stroke
265 3.750 x 3.000
267 3.500 x 3.480
283 3.875 x 3.000
302 4.000 x 3.000
305 3.735 x 3.480
307 3.875 x 3.250
327 4.000 x 3.250
350 4.000 x 3.480
400 4.125 x 3.750

if you notice, all three I listed have the same bore OR stroke as the ones he listed


some aftermarket combos you might see/hear about

355 4.030 x 3.480
377 4.000 x 3.750
383 4.030 x 3.750
385 4.040 x 3.750
there are lots more as well, some as large as 427+ cubic inches

 

not a SBC, was same engine design as the 409