cubic inches?
02-14-2006, 02:22 AM
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cubic inches? I know this might sound stupid but it will bother me if I don't ask.
I had a discussion at work about motors and engine size and cubic inches were brought up after a brief arguement I was able to convince that the LS1=5.7L comes out to be 346ci. But I couldnt be convinced of what he was saying, someone either prove me right or wrong here.
Now I know that the bore and stroke make up what the CI. I am also sure that the motors that come in vehicles other than the F-bodies, corvettes, and GTOs. But my main question is what is the cubic inches for the 5.3, 5.7 and 6.0L engines in the trucks.
any information would be greatly appriciated
Thanks
-Mike-
I had a discussion at work about motors and engine size and cubic inches were brought up after a brief arguement I was able to convince that the LS1=5.7L comes out to be 346ci. But I couldnt be convinced of what he was saying, someone either prove me right or wrong here.
Now I know that the bore and stroke make up what the CI. I am also sure that the motors that come in vehicles other than the F-bodies, corvettes, and GTOs. But my main question is what is the cubic inches for the 5.3, 5.7 and 6.0L engines in the trucks.
any information would be greatly appriciated
Thanks
-Mike-
02-14-2006, 02:56 AM
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according to http://www.metric-conversions.org/vo...bic-inches.htm
5.7L = 347 CI
6L = 366 CI
5.3L = 332 CI
and just for fun
4.6L = 280CI
Hope that is the info you were looking for, I really should be doing home work
~Alex
5.7L = 347 CI
6L = 366 CI
5.3L = 332 CI
and just for fun
4.6L = 280CI
Hope that is the info you were looking for, I really should be doing home work
~Alex
02-14-2006, 06:11 AM
#3
TECH Addict
There's many sides of this.
To find out the capcity or displacement of an engine it is usually bore x stroke, however dished pistons, overbore and combustion chamber shape can have an affect (as far as I understand it anyhow).
Litres or cubic inches are just units of measure and all are correct.
To get a more accurate conversion you need to know the exact capcity of one unit. Litres are fairly large so simply saying 5.7 litres is not accurate enough. If you can place it to 3 deicmal places it will help, or alternativly use cubic centimetres instead.
cc = ci x 16.3871
So in the case of the LS1, which is 346ci
346 x 16.3871 = 5669.9366cc Or in simpler terms it we "round it to the nearest whole 5700cc (5.7 litres).
An older SBC is 350ci (350 x 16.3871) or 5735.485cc but once again when it's "rounded" to the nearest whole we get 5700cc (5.7 litres).
Cubic Inches are only small and a slight varation is really unimportant in performance terms.
Also company's "market" engine's slightly different. Take the old Land Rover Series 2 from the late 60's early 70's. It was always listed a a 2 1/4 (two and a quarter) liter engine instead of 2.25 or 2.3 if it where rounded.
Pontiac did something similar, on the early Trans Ams they had the 400ci Poncho motor, and according to some VIN tags it's a 6.5 litre where as later on with the same bore and stroke and same ci capacity it was marketed as a 6.6 litre as it made it sound like a new engine.
Hope this helps.
To find out the capcity or displacement of an engine it is usually bore x stroke, however dished pistons, overbore and combustion chamber shape can have an affect (as far as I understand it anyhow).
Litres or cubic inches are just units of measure and all are correct.
To get a more accurate conversion you need to know the exact capcity of one unit. Litres are fairly large so simply saying 5.7 litres is not accurate enough. If you can place it to 3 deicmal places it will help, or alternativly use cubic centimetres instead.
cc = ci x 16.3871
So in the case of the LS1, which is 346ci
346 x 16.3871 = 5669.9366cc Or in simpler terms it we "round it to the nearest whole 5700cc (5.7 litres).
An older SBC is 350ci (350 x 16.3871) or 5735.485cc but once again when it's "rounded" to the nearest whole we get 5700cc (5.7 litres).
Cubic Inches are only small and a slight varation is really unimportant in performance terms.
Also company's "market" engine's slightly different. Take the old Land Rover Series 2 from the late 60's early 70's. It was always listed a a 2 1/4 (two and a quarter) liter engine instead of 2.25 or 2.3 if it where rounded.
Pontiac did something similar, on the early Trans Ams they had the 400ci Poncho motor, and according to some VIN tags it's a 6.5 litre where as later on with the same bore and stroke and same ci capacity it was marketed as a 6.6 litre as it made it sound like a new engine.
Hope this helps.
