Not Ranked
The horse power per liter/inch is the same lame argument the ricers always use. Bottom line is what makes it to the wheels (preferably rear wheels <VBG> )
So what push rods have been around longer, does it mean they are some how not as good? It works, it works very well.
Look at the massive amounts of horse power a chip and some minor tweaking will get you from a Turbo V6 Buick. That design is almost 20 years old and imagine if they kept it around with just some updates and revisions what it would be making today? It would embarrass every new car today. Doesn't matter if you use push rods or OHC as long as the results speak for themselves. Hmmm any one want to guess how long OHC design has been around???
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