Please help me diagnose this 273

pt70 said
Not sure what you are trying to say, but it sounds snarky. When you make statements that are untrue, other readers realize that you are just being argumentative, and this hurts your credibility in the future.

For those who like to learn about some of the old Mopar history, go to ALLPAR.com, type in "dyno testing" and search for an article by Ed Poplawski. He ran some of the dynos back in the 60's and 70's. He also ran dyno #13, which was used for high performance engine testing. There is also some interesting photos of the dyno rooms [they called them cells]. With all the tubes and wires hanging off, the engines look like they are on life support.

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.