Stirring up a hornets nest

I was wondering what the actual horse power is on a 273 commando. I know the book says 235
I had a gentleman who worked for Chrysler back in the day tell me it was alot higher than what was posted. He said it was for insurance purposes that it was rated the 235. Just another curious thought.
I had read somewhere a stock Commando engine dyno'd around 220 - 225. I wish I could find that link to share. I don't know anyone who has had one measured.