Quote:
Originally Posted by arpad_m
Low end torque, weight, size, center of gravity, simplicity (and all their associated ancillary advantages) come to mind.
The only real disadvantage is that they can't rev very high because of the extra mechanical coupling (pushrods), everything else is negative hype.
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Power per litre also tends to be higher from the factory with DOHC engines, which is good for countries with displacement tax. In North America, it's a moot argument.
But yeah, pushrod engines still exist for a reason. Here is an Engineering Explained video for a quick summary:
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