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The big engines listed above are mostly 7.0 litres. The 3.5 litre engines listed on American cars today as being large are much smaller than the 350 cubic inch (5.7 L) engines that once were considered medium size.
The 3.5 litre engine is 213 cubic inches. The 1964 Mustang's smallest Ford V8 engine of 289 cubic inches is 4.7 litres.
However, modern engines are much more efficient, using such technologies as an [[Engine Control Unit|ECU]], electronic [[fuel injection]], and [[variable valve timing]]. Also, the engines and the total weight of cars they are fitted in are lighter, so the difference in performance is not as great as might otherwise be supposed.
==See also==
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