422 dyno fail

PRH said

You can buy a set of heads that are significantly better than what he has for $600-800??

No one likes it when I mention this, because it often goes against things they “know”........ but......
My friends Pontiac Stocker makes way way more power than this motor does(or at least what this dyno sheet says.....and is more than 500tq/450hp) with a 412” build that has heads that flow 220cfm, a cam that’s .420” lift at the valve, and the stock intake and carb.

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I’m guessing if you add in what he paid for the heads that are on that engine you could more than do it. Someone mentioned his intake as being questionable. Although maybe not the best choice I ran 11.82 with one on a 340 back in the 1970’s early 1980’s at 3200 plus pounds. It was pulled out of the box and installed on a set of J heads. But then again something that works great at 340-360 cubic inches my hurt you at 408. Not sure what horsepower I was putting out but I’m guessing it’s more than this engine is.