In reality, small differences due to better or worse ring sealing (burn any oil?) might mean slightly more compression and a few more whp, but nothing earth shattering.
Given the tighter tolerances in modern engine builds, my theory is that so-called "factory freaks" (at least in modern engines) are all due to apples to oranges dyno comparions (e.g., dynapack vs dynojet) or someone using a wildly optimisitic correction factor or looking at uncorrected values in the middle of winter.
In other words it's horsesh!t.
On older motors you probably did have more variablity betwen carbeurators working properly and engines having good compression. Modern engines are far less variable in build or tune.
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Last edited by Jordo!; 02-20-2011 at 02:29 PM.
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