How many CI does a 5.3 really have?
01-10-2014, 02:47 AM
#1
How many CI does a 5.3 really have? No particular reason just for knowledge.
I've actually searched this and found 3 answer.
1. 323ci
2. 325ci
3. 327ci
So what's the truth?
It reminded me of the Mustang 5.0 where a lot of people think it's a 5.0 when it's really a 4.9
Ive also read that older 5.3 was 327 so that's why some people think it is 327...
Anyone have the real answer?
Thanks
I've actually searched this and found 3 answer.
1. 323ci
2. 325ci
3. 327ci
So what's the truth?
It reminded me of the Mustang 5.0 where a lot of people think it's a 5.0 when it's really a 4.9
Ive also read that older 5.3 was 327 so that's why some people think it is 327...
Anyone have the real answer?
Thanks
01-10-2014, 08:40 AM
#2
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All answers are correct.Chevy lists their 5.3 as 323ci.I believe the metric equivalent is 325ci..Super Chevy calls it the "old school' 327ci..Don't quote me on all of this, I'm far from an expert,that's what I found sniffing around.
01-10-2014, 01:04 PM
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So here are all the offical conversions:
323ci = 5.293L
325ci = 5.325L
327ci = 5.358L
So yes, they can all be called a "5.3", though a 327ci would/could technically be rounded to "5.4", since .008 rounds to .01, making it 5.36L, and .06 could then be rounded up to .1, thus 5.4L.
As for the Gen III LM7 (5.3L), GM has it listed as "5327 cm3 / 325 cui".
For the Gen IV LC9 (5.3L), GM also listed the specs as "5327 cm3 / 325 cui".
In addition to the Ford, "5.0" was used for the Chevy 305ci as well as the Olds 307ci (and thus would be accurate for the old Chevy 307ci as well, though domestic OEMs rarely referred to US engines in metric sizing during that era).
Yes, the Ford "5.0" is really a 4.9L (4942 cm3 / 301.6 cui). However, I think the reason why 5.0L was justified is because they round the "301.6ci" up to a 302ci, which in turn would equal 4.948L, and .008 rounds to .01, which then equals 4.95L, and .05 rounds to .1, which then equals 5.0L.
Interestingly though, Pontiac also had a 301.6ci engine, which they did NOT round up to 302, but instead rounded down to a 301ci (4.9L), and also referred to it as a 301ci/4.9L both on the car itself as well as the literature.
323ci = 5.293L
325ci = 5.325L
327ci = 5.358L
So yes, they can all be called a "5.3", though a 327ci would/could technically be rounded to "5.4", since .008 rounds to .01, making it 5.36L, and .06 could then be rounded up to .1, thus 5.4L.
As for the Gen III LM7 (5.3L), GM has it listed as "5327 cm3 / 325 cui".
For the Gen IV LC9 (5.3L), GM also listed the specs as "5327 cm3 / 325 cui".
Yes, the Ford "5.0" is really a 4.9L (4942 cm3 / 301.6 cui). However, I think the reason why 5.0L was justified is because they round the "301.6ci" up to a 302ci, which in turn would equal 4.948L, and .008 rounds to .01, which then equals 4.95L, and .05 rounds to .1, which then equals 5.0L.
Interestingly though, Pontiac also had a 301.6ci engine, which they did NOT round up to 302, but instead rounded down to a 301ci (4.9L), and also referred to it as a 301ci/4.9L both on the car itself as well as the literature.
01-10-2014, 02:26 PM
#4
So here are all the offical conversions:
323ci = 5.293L
325ci = 5.325L
327ci = 5.358L
So yes, they can all be called a "5.3", though a 327ci would/could technically be rounded to "5.4", since .008 rounds to .01, making it 5.36L, and .06 could then be rounded up to .1, thus 5.4L.
As for the Gen III LM7 (5.3L), GM has it listed as "5327 cm3 / 325 cui".
For the Gen IV LC9 (5.3L), GM also listed the specs as "5327 cm3 / 325 cui".
In addition to the Ford, "5.0" was used for the Chevy 305ci as well as the Olds 307ci (and thus would be accurate for the old Chevy 307ci as well, though domestic OEMs rarely referred to US engines in metric sizing during that era).
Yes, the Ford "5.0" is really a 4.9L (4942 cm3 / 301.6 cui). However, I think the reason why 5.0L was justified is because they round the "301.6ci" up to a 302ci, which in turn would equal 4.948L, and .008 rounds to .01, which then equals 4.95L, and .05 rounds to .1, which then equals 5.0L.
Interestingly though, Pontiac also had a 301.6ci engine, which they did NOT round up to 302, but instead rounded down to a 301ci (4.9L), and also referred to it as a 301ci/4.9L both on the car itself as well as the literature.
323ci = 5.293L
325ci = 5.325L
327ci = 5.358L
So yes, they can all be called a "5.3", though a 327ci would/could technically be rounded to "5.4", since .008 rounds to .01, making it 5.36L, and .06 could then be rounded up to .1, thus 5.4L.
As for the Gen III LM7 (5.3L), GM has it listed as "5327 cm3 / 325 cui".
For the Gen IV LC9 (5.3L), GM also listed the specs as "5327 cm3 / 325 cui".
In addition to the Ford, "5.0" was used for the Chevy 305ci as well as the Olds 307ci (and thus would be accurate for the old Chevy 307ci as well, though domestic OEMs rarely referred to US engines in metric sizing during that era).
Yes, the Ford "5.0" is really a 4.9L (4942 cm3 / 301.6 cui). However, I think the reason why 5.0L was justified is because they round the "301.6ci" up to a 302ci, which in turn would equal 4.948L, and .008 rounds to .01, which then equals 4.95L, and .05 rounds to .1, which then equals 5.0L.
Interestingly though, Pontiac also had a 301.6ci engine, which they did NOT round up to 302, but instead rounded down to a 301ci (4.9L), and also referred to it as a 301ci/4.9L both on the car itself as well as the literature.
funny how my bmw is called 325ci and now its actually getting a 325ci engine
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01-27-2014, 02:05 AM
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So here are all the offical conversions:
323ci = 5.293L
325ci = 5.325L
327ci = 5.358L
So yes, they can all be called a "5.3", though a 327ci would/could technically be rounded to "5.4", since .008 rounds to .01, making it 5.36L, and .06 could then be rounded up to .1, thus 5.4L.
As for the Gen III LM7 (5.3L), GM has it listed as "5327 cm3 / 325 cui".
For the Gen IV LC9 (5.3L), GM also listed the specs as "5327 cm3 / 325 cui".
In addition to the Ford, "5.0" was used for the Chevy 305ci as well as the Olds 307ci (and thus would be accurate for the old Chevy 307ci as well, though domestic OEMs rarely referred to US engines in metric sizing during that era).
Yes, the Ford "5.0" is really a 4.9L (4942 cm3 / 301.6 cui). However, I think the reason why 5.0L was justified is because they round the "301.6ci" up to a 302ci, which in turn would equal 4.948L, and .008 rounds to .01, which then equals 4.95L, and .05 rounds to .1, which then equals 5.0L.
Interestingly though, Pontiac also had a 301.6ci engine, which they did NOT round up to 302, but instead rounded down to a 301ci (4.9L), and also referred to it as a 301ci/4.9L both on the car itself as well as the literature.
323ci = 5.293L
325ci = 5.325L
327ci = 5.358L
So yes, they can all be called a "5.3", though a 327ci would/could technically be rounded to "5.4", since .008 rounds to .01, making it 5.36L, and .06 could then be rounded up to .1, thus 5.4L.
As for the Gen III LM7 (5.3L), GM has it listed as "5327 cm3 / 325 cui".
For the Gen IV LC9 (5.3L), GM also listed the specs as "5327 cm3 / 325 cui".
In addition to the Ford, "5.0" was used for the Chevy 305ci as well as the Olds 307ci (and thus would be accurate for the old Chevy 307ci as well, though domestic OEMs rarely referred to US engines in metric sizing during that era).
Yes, the Ford "5.0" is really a 4.9L (4942 cm3 / 301.6 cui). However, I think the reason why 5.0L was justified is because they round the "301.6ci" up to a 302ci, which in turn would equal 4.948L, and .008 rounds to .01, which then equals 4.95L, and .05 rounds to .1, which then equals 5.0L.
Interestingly though, Pontiac also had a 301.6ci engine, which they did NOT round up to 302, but instead rounded down to a 301ci (4.9L), and also referred to it as a 301ci/4.9L both on the car itself as well as the literature.
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