Metric engine sizes
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Cargo Master
Joined: Apr 2003
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From: Frequently frozen MN
Metric engine sizes
Not that the manufacturers sizing is all that accurate, but
Metric sizes are not as accurate because they'll only go to 0.1 liter -- which is about 6 ci
So we get the famous 4.9Ll 300 I6 and the 5.0L 302 V-8
In reality they're 4.916 and 4.948.
Rodding mags have marked 350's, 351's and even 360's as 5.7 liters. So now you have to say a Ford or Chebby 5.7. -- and the mopar is really a 5.8 something.
It's not important, of course, it's just one of the many small things in life that bug me a bit
hj
Metric sizes are not as accurate because they'll only go to 0.1 liter -- which is about 6 ci
So we get the famous 4.9Ll 300 I6 and the 5.0L 302 V-8
In reality they're 4.916 and 4.948.
Rodding mags have marked 350's, 351's and even 360's as 5.7 liters. So now you have to say a Ford or Chebby 5.7. -- and the mopar is really a 5.8 something.
It's not important, of course, it's just one of the many small things in life that bug me a bit
hj
Fleet Owner
Joined: Aug 2010
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From: Reynoldsburg, Ohio
Well this should be something to put outta your mind otherwise I'll drive you crazy. I will say even when Chevrolet claimed a 396 CID engine it really was a 402 CID---just goes to show displacement claims aren't accurate and in 99% of applications have no bearing on performance with such microscopic discrepancies.
i ain't rite
Joined: Mar 2005
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From: Marlboro Mental Hospital.
396 engine size claim was chevy's way of getting around the no engine over 400cubic engines in anything but full size cars.
the 396size allowed chevy to put the big block in Novas and Chevelle's.
the 396size allowed chevy to put the big block in Novas and Chevelle's.
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The 396 with a 4.094 x 3.76 B&S was 395.97 CID.
The 402 was 4.124 x 3.76 making 401.8 CID.
Or 6490.09 CC vs. 6585.03 CC. Roughly.
Depends on how far out you take the decimal point.....
A 427 Ford was only 425 ..... lots of displacement numbers have a little marketing math applied.
The 402 was 4.124 x 3.76 making 401.8 CID.
Or 6490.09 CC vs. 6585.03 CC. Roughly.
Depends on how far out you take the decimal point.....
A 427 Ford was only 425 ..... lots of displacement numbers have a little marketing math applied.
Fleet Owner
Joined: Aug 2010
Posts: 21,254
Likes: 1,656
From: Reynoldsburg, Ohio
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