Absolutely not. I am speaking from experience, not an online article. It's a well known fact that Chrysler engines all through the muscle car era were well under their rated compression ratios, due to high deck heights, large combustion chambers, retarded camshaft timing and tuning that "could have been better". I am very familiar with the Allpar article and many more. Those dyno tests were only run on select few engines that were tuned specifically for those dyno runs. That hardly represents the entire Chrysler engine lineup. Everything I have listed here is well known through the Mopar community as fact. I don't care what Allpar says. That one article certainly doesn't speak for the vast majority of Chrysler engines that were produced. Ask any competent machinist that's been around 40 years or more. They can well attest to the facts regarding Chrysler's lack of tolerance with factory machine work. It was all over the map. Nothing I've said was untrue. Snarky........maybe a little. That's what big girl pants are for.