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Discussion Starter #1
I know it's a 4.6 Litre (4600 c.c.) and would be roughly 280 cu.in. Anybody know the exact displacement in litres and cu.inches?

Or if you know the bore and stroke, that would do.

Sounds like 1 HP per cube. Not too shabby.
 

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its 281ci, i think bore and stroke is 90 x 92
and 4.6 liters. 1 liter=approx 61 ci.
 

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oh thank u master :grin:
 

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You know - I was thinking about the c.i. thing.

Mind you, I have no performance anxiety with what we're packing, but.....

What would it have taken to treat us right and bore/stroke just a hair to give us a good old fashioned 289.

Jeez - if you're going retro, go right.
 

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<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2002-01-07 15:02, kfengler wrote:
The manufacturers tend to round off in odd ways... Like the 302 being called a 5.0 L, when it's much closer to 4.9.

The 4.6 is real close but 281 should really be 280 if you round to the closest .5 cu. in.

</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>

Actually, if you do 4.6 * 61 you get 280.6, which rounds to 281. So, if you go by 4.6, then the 281 is correct.And, if you divide 302 by 61, you get 4.9508... which is closer to 5.0 than 4.9

-Bill

<font size=-1>[ This Message was edited by: bullitbill on 2002-01-07 17:25 ]</font>
 

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This is from another posting I made on another discussion:

Here are the actual numbers of displacement for the Bullitt 4.6 and the WS6 5.7.

Engine--Bore--Stroke
GM 350--3.900"--3.620"
Ford 281--3.551"--3.543"

Area = Pi * R<sup>2</sup>
Volume = Area * Stroke
3.1416 * 3.8 * 3.62* 8cyl = 345.7048 for GM
3.1416 * 3.1524 * 3.543 * 8cyl = 280.7064 for Ford

or a real difference of 64.9984 CI

345.7048 / 61.0237 = 5.660 Liters
280.7064 / 61.0237 = 4.600 Liters


_________________
DONWIL - No Mods...




<font size=-1>[ This Message was edited by: donwil on 2002-01-08 09:37 ]</font>
 

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donwil, not to be picky but the ls1 is not a 350. its a 346ci
 

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PICKY, PICKY, PICKY..... :grin: :grin: :grin:

Really, did, not know there was a difference, but you are indeed correct.

LS1 Bore and Stroke are 3.900 3.620 or
3.1416 * 3.8 * 3.62* 8cyl = 345.7048 for GM

I will correct my other posts.
 

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Discussion Starter #11
So how many horses/cu.in. for an LS1?

Is a Bullitt more efficient?

<font size=-1>[ This Message was edited by: 01GTCOUPE on 2002-01-08 11:35 ]</font>
 

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345.7048 - LS1 - 325 hp
280.7064 - Bullitt - 265 HP

325 / 345.7048 = 0.94 HP/CI
265 / 280.7064 = 0.94 HP/CI

How ironic is this?????

Unmodified Bullitts are dynoing around 270-275 HP

What are the REAL unmodified HP #s for an LS1 in either an SS or WS6?
 

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i have personally seen a stock 01 ls1 dyno at around 313rwhp. Thats about 370hp if u consider a 15% loss. So i think the ls1 is still the top dog for now, now the ls6 thats a different story
 

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So Chevy is rating at the rear wheel and Ford is rating at the flywheel??? Is this correct???
 

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well they underrate them so as not to make insurance even more pricey and also to not encroach on the vette. They use basically a bs number like in the old days
 
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